Fix some comment formatting

Marlin/src/HAL/HAL_DUE/MarlinSerialUSB_Due.cpp

 }
 
 /**
-* Imports from print.h
-*/
+ * Imports from print.h
+ */
 
 void MarlinSerialUSB::print(char c, int base) {
   print((long)c, base);

Marlin/src/HAL/HAL_STM32/spi_pins.h

 /**
-* Marlin 3D Printer Firmware
-* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
-*
-* This program is free software: you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation, either version 3 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*/
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 #pragma once
 
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
- *
  */
 #ifndef SCK_PIN
   #define SCK_PIN   13

Marlin/src/HAL/HAL_STM32F4/spi_pins.h

 /**
-* Marlin 3D Printer Firmware
-* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
-*
-* This program is free software: you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation, either version 3 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*/
-
-#ifndef SPI_PINS_H_
-#define SPI_PINS_H_
-
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
 
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
- *
  */
 #ifndef SCK_PIN
-    #define SCK_PIN   PA5
+  #define SCK_PIN   PA5
 #endif
 #ifndef MISO_PIN
-    #define MISO_PIN  PA6
+  #define MISO_PIN  PA6
 #endif
 #ifndef MOSI_PIN
-    #define MOSI_PIN  PA7
+  #define MOSI_PIN  PA7
 #endif
 #ifndef SS_PIN
-    #define SS_PIN    PA8
+  #define SS_PIN    PA8
 #endif
-
-#endif // SPI_PINS_H_

Marlin/src/HAL/HAL_STM32F7/spi_pins.h

 /**
-* Marlin 3D Printer Firmware
-* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
-*
-* This program is free software: you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation, either version 3 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*
-*/
-
-#ifndef SPI_PINS_H_
-#define SPI_PINS_H_
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
 
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
- *
  */
 #define SCK_PIN   PA5
 #define MISO_PIN  PA6
 #define MOSI_PIN  PA7
 #define SS_PIN    PA8
-
-#endif // SPI_PINS_H_

Marlin/src/lcd/lcdprint_hd44780.cpp

 }
 
 /**
-* @brief Draw a UTF-8 string
-*
-* @param utf8_str : the UTF-8 string
-* @param cb_read_byte : the callback function to read one byte from the utf8_str (from RAM or ROM)
-* @param max_length : the pixel length of the string allowed (or number of slots in HD44780)
-*
-* @return the number of pixels advanced
-*
-* Draw a UTF-8 string
-*/
+ * @brief Draw a UTF-8 string
+ *
+ * @param utf8_str : the UTF-8 string
+ * @param cb_read_byte : the callback function to read one byte from the utf8_str (from RAM or ROM)
+ * @param max_length : the pixel length of the string allowed (or number of slots in HD44780)
+ *
+ * @return the number of pixels advanced
+ *
+ * Draw a UTF-8 string
+ */
 static int lcd_put_u8str_max_cb(const char * utf8_str, uint8_t (*cb_read_byte)(uint8_t * str), pixel_len_t max_length) {
   pixel_len_t ret = 0;
   uint8_t *p = (uint8_t *)utf8_str;