Move includes to where they are needed. This allows to simplify

romstage.c files in mainboards.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5539 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/arch/i386/include/stddef.h

@@ -8,7 +8,9 @@ typedef long ssize_t;
 typedef int wchar_t;
 typedef unsigned int wint_t;
 
+#ifndef NULL
 #define NULL ((void *)0)
+#endif
 
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)