Add include selector between char. LCD and GLCD

Marlin/ultralcd.cpp

 uint8_t lcd_status_message_level;
 char lcd_status_message[LCD_WIDTH+1] = WELCOME_MSG;
 
+#ifdef DOGLCD
+#include "dogm_lcd_implementation.h"
+#else
 #include "ultralcd_implementation_hitachi_HD44780.h"
+#endif
 
 /** forward declerations **/
 /* Different menus */