Reorganize includes and declarations

Marlin/src/lcd/ultralcd.cpp

@@ -74,6 +74,9 @@
   #include "../libs/buzzer.h"
 #endif
 
+// Buttons
+volatile uint8_t buttons;
+
 #if ENABLED(SDSUPPORT) && PIN_EXISTS(SD_DETECT)
   uint8_t lcd_sd_status;
 #endif
@@ -219,6 +222,10 @@ bool lcd_blink() {
 ///////////// Keypad Handling //////////////
 ////////////////////////////////////////////
 
+#if ENABLED(REPRAPWORLD_KEYPAD)
+  volatile uint8_t buttons_reprapworld_keypad;
+#endif
+
 #if ENABLED(ADC_KEYPAD)
 
   #define KEYPAD_HOME EN_REPRAPWORLD_KEYPAD_F1