Set language display charset in language.h

Marlin/language.h

 
 #include "MarlinConfig.h"
 
+//#define SIMULATE_ROMFONT //Comment in to see what is seen on the character based displays
+
 // Fallback if no language is set. DON'T CHANGE
 #ifndef LCD_LANGUAGE
   #define LCD_LANGUAGE en
 #define INCLUDE_LANGUAGE LANGUAGE_INCL(LCD_LANGUAGE)
 
 #include INCLUDE_LANGUAGE
+
+#if DISABLED(SIMULATE_ROMFONT) && DISABLED(DISPLAY_CHARSET_ISO10646_1) && DISABLED(DISPLAY_CHARSET_ISO10646_5) && DISABLED(DISPLAY_CHARSET_ISO10646_KANA) && DISABLED(DISPLAY_CHARSET_ISO10646_GREEK) && DISABLED(DISPLAY_CHARSET_ISO10646_CN)
+  #define DISPLAY_CHARSET_ISO10646_1 // use the better font on full graphic displays.
+#endif
+
 #include "language_en.h"
 
 #endif //__LANGUAGE_H

Marlin/language_en.h

 #ifndef LANGUAGE_EN_H
 #define LANGUAGE_EN_H
 
-//#define SIMULATE_ROMFONT //Comment in to see what is seen on the character based displays
-#if DISABLED(SIMULATE_ROMFONT) && DISABLED(DISPLAY_CHARSET_ISO10646_1) && DISABLED(DISPLAY_CHARSET_ISO10646_5) && DISABLED(DISPLAY_CHARSET_ISO10646_KANA) && DISABLED(DISPLAY_CHARSET_ISO10646_GREEK) && DISABLED(DISPLAY_CHARSET_ISO10646_CN)
-  #define DISPLAY_CHARSET_ISO10646_1 // use the better font on full graphic displays.
-#endif
-
 #ifndef WELCOME_MSG
   #define WELCOME_MSG                         MACHINE_NAME " ready."
 #endif