Clear up LCD-related compile issues

Marlin/src/lcd/u8g_fontutf8.cpp

 /**
- * @file    fontutf8.c
+ * @file    u8g_fontutf8.cpp
  * @brief   font api for u8g lib
  * @author  Yunhui Fu (yhfudev@gmail.com)
  * @version 1.0
  * @copyright GPL/BSD
  */
 
-#include "../inc/MarlinConfig.h"
+#include "../inc/MarlinConfigPre.h"
 
-#if ENABLED(ULTRA_LCD)
+#if ENABLED(DOGLCD)
 
 #include <string.h>
 #include "fontutils.h"
   return data.adv;
 }
 
-#endif // ENABLED(ULTRA_LCD)
+#endif // DOGLCD

Marlin/src/lcd/ultralcd.cpp

 
 #if ENABLED(ULTRA_LCD)
 
+#include <stdarg.h>
+
 #include "ultralcd.h"
 
 #include "../sd/cardreader.h"
       callbackFunc = callback; \
       liveEdit = live; \
     } \
-    typedef void _name
+    typedef void _name##_void
 
   DEFINE_MENU_EDIT_TYPE(int16_t, int3, itostr3, 1);
   DEFINE_MENU_EDIT_TYPE(uint8_t, int8, i8tostr3, 1);

Marlin/src/lcd/ultralcd.h

                                               EN_REPRAPWORLD_KEYPAD_LEFT) \
                                             )
 
-  #elif ENABLED(NEWPANEL)
+  #elif defined(EN_C)
 
     #define LCD_CLICKED (buttons & EN_C)