Spacing, defined(), #include tweaks

Marlin/src/HAL/HAL_AVR/fast_pwm.cpp

             /*n, q*/      2, 0
           };
         }
-      #elif defined TCCR2A
+      #elif defined(TCCR2A)
         #if ENABLED(USE_OCR2A_AS_TOP)
           case TIMER2A:   break; // protect TIMER2A
           case TIMER2B: {

Marlin/src/HAL/HAL_ESP32/HAL_spi_ESP32.cpp

 #include "../shared/HAL_SPI.h"
 #include <pins_arduino.h>
 #include "spi_pins.h"
-#include "../../core/macros.h"
 #include <SPI.h>
 
+#include "../../core/macros.h"
+
 // ------------------------
 // Public Variables
 // ------------------------

Marlin/src/HAL/HAL_ESP32/web.cpp

 #if ENABLED(WEBSUPPORT)
 
 #include <SPIFFS.h>
+
 #include "wifi.h"
 
 AsyncEventSource events("/events"); // event source (Server-Sent events)
 
-void onNotFound(AsyncWebServerRequest *request){
+void onNotFound(AsyncWebServerRequest *request) {
   request->send(404);
 }
 

Marlin/src/HAL/HAL_LINUX/include/serial.h

 
   void flush() { receive_buffer.clear(); }
 
-  uint8_t availableForWrite(void){
+  uint8_t availableForWrite(void) {
     return transmit_buffer.free() > 255 ? 255 : (uint8_t)transmit_buffer.free();
   }
 
-  void flushTX(void){
+  void flushTX(void) {
     if (host_connected)
       while (transmit_buffer.available()) { /* nada */ }
   }

Marlin/src/HAL/HAL_STM32/pinsDebug_STM32duino.h

     case 'D' : mode_all = GPIOD->MODER; break;
     #ifdef PE_0
       case 'E' : mode_all = GPIOE->MODER; break;
-    #elif defined (PF_0)
+    #elif defined(PF_0)
       case 'F' : mode_all = GPIOF->MODER; break;
-    #elif defined (PG_0)
+    #elif defined(PG_0)
       case 'G' : mode_all = GPIOG->MODER; break;
-    #elif defined (PH_0)
+    #elif defined(PH_0)
       case 'H' : mode_all = GPIOH->MODER; break;
-    #elif defined (PI_0)
+    #elif defined(PI_0)
       case 'I' : mode_all = GPIOI->MODER; break;
-    #elif defined (PJ_0)
+    #elif defined(PJ_0)
       case 'J' : mode_all = GPIOJ->MODER; break;
-    #elif defined (PK_0)
+    #elif defined(PK_0)
       case 'K' : mode_all = GPIOK->MODER; break;
-    #elif defined (PL_0)
+    #elif defined(PL_0)
       case 'L' : mode_all = GPIOL->MODER; break;
     #endif
   }

Marlin/src/HAL/HAL_STM32_F4_F7/STM32F7/TMC2660.cpp

     current_scaling = (byte)((resistor_value * mASetting * 32.0 / (0.165 * sq(1000.0))) - 0.5); //theoretically - 1.0 for better rounding it is 0.5
     #ifdef TMC_DEBUG0 // crashes
         SERIAL_ECHOPAIR("\nCS (Vsense=1): ",current_scaling);
-      } else {
-        SERIAL_ECHOPAIR("\nCS: ", current_scaling);
     #endif
   }
+  #ifdef TMC_DEBUG0 // crashes
+    else
+      SERIAL_ECHOPAIR("\nCS: ", current_scaling);
+  #endif
 
   // do some sanity checks
   NOMORE(current_scaling, 31);

Marlin/src/HAL/shared/servo.h

 #else
   #include <stdint.h>
 
-  #if defined(__AVR__) || defined(ARDUINO_ARCH_SAM) || defined (__SAMD51__)
+  #if defined(__AVR__) || defined(ARDUINO_ARCH_SAM) || defined(__SAMD51__)
     // we're good to go
   #else
     #error "This library only supports boards with an AVR, SAM3X or SAMD51 processor."

Marlin/src/lcd/extensible_ui/lib/lulzbot/ftdi_eve_lib/extended/screen_types.h

 template<uint8_t DL_SLOT,uint32_t DL_SIZE = 0>
 class CachedScreen {
   protected:
-    static bool storeBackground(){
+    static bool storeBackground() {
       DLCache dlcache(DL_SLOT);
       if (!dlcache.store(DL_SIZE)) {
         SERIAL_ECHO_START();
       return true;
     }
 
-    static void repaintBackground(){
+    static void repaintBackground() {
       using namespace FTDI;
       DLCache dlcache(DL_SLOT);
       CLCD::CommandFifo cmd;
     }
 
   public:
-    static void onRefresh(){
+    static void onRefresh() {
       using namespace FTDI;
       DLCache dlcache(DL_SLOT);
       CLCD::CommandFifo cmd;
 
       if (dlcache.has_data()) {
         dlcache.append();
-      } else {
+      }
+      else {
         current_screen.onRedraw(BACKGROUND);
         dlcache.store(DL_SIZE);
       }

buildroot/share/PlatformIO/variants/BIGTREE_GENERIC_STM32F407_5X/variant.h

   #define STM32F4X_PIN_NUM  64  //64 pins mcu, 51 gpio
   #define STM32F4X_GPIO_NUM 51
   #define STM32F4X_ADC_NUM  16
-#elif defined STM32F407_5VX
+#elif defined(STM32F407_5VX)
   #define STM32F4X_PIN_NUM  100  //100 pins mcu, 82 gpio
   #define STM32F4X_GPIO_NUM 82
   #define STM32F4X_ADC_NUM  16
-#elif defined STM32F407_5ZX
+#elif defined(STM32F407_5ZX)
   #define STM32F4X_PIN_NUM  144  //144 pins mcu, 114 gpio
   #define STM32F4X_GPIO_NUM 114
   #define STM32F4X_ADC_NUM  24
-#elif defined STM32F407IX
+#elif defined(STM32F407IX)
   #define STM32F4X_PIN_NUM  176  //176 pins mcu, 140 gpio
   #define STM32F4X_GPIO_NUM 140
   #define STM32F4X_ADC_NUM  24