stand/efi: Better include order for sharing

Have a better include order so this can more easily be shared between
EFI and kboot. Fewer ifdefs and the same (enough) include order as
before.

Sponsored by:		Netflix

stand/efi/loader/bootinfo.c

@@ -45,12 +45,12 @@ __FBSDID("$FreeBSD$");
 
 #include "bootstrap.h"
 #include "modinfo.h"
-#include "loader_efi.h"
 
 #if defined(__amd64__)
 #include <machine/specialreg.h>
 #endif
 
+#include "loader_efi.h"
 #include "gfx_fb.h"
 
 #if defined(LOADER_FDT_SUPPORT)