Revert "better place for EFI_STORAGE_MFS_EXTERNAL default"

This reverts commit 28d4170cd8a34f8e26a4eae95927be4ad7baa219.

firmware/config/stm32f4ems/efifeatures.h

@@ -201,9 +201,6 @@
 #define EFI_STORAGE_MFS         FALSE
 #endif
 
-#ifndef EFI_STORAGE_MFS_EXTERNAL
-#define EFI_STORAGE_MFS_EXTERNAL FALSE
-#endif
 
 /**
  * Usually you need shaft position input, but maybe you do not need it?

firmware/controllers/flash_main.cpp

@@ -28,6 +28,10 @@
 
 #include "runtime_state.h"
 
+#ifndef EFI_STORAGE_MFS_EXTERNAL
+#define EFI_STORAGE_MFS_EXTERNAL FALSE
+#endif
+
 static bool needToWriteConfiguration = false;
 
 /* if we use ChibiOS MFS for settings */