AMD boards (non-AGESA): Cleanup post_cache_as_ram.c includes

Change-Id: Ib3a69e3364418426438f88ba14e5cf744e2414fa
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/4524
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/include/lib.h

@@ -54,6 +54,7 @@ void cache_as_ram_main(void);
 #else
 void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx);
 #endif
+void post_cache_as_ram(void);
 
 /* Defined in src/lib/hexdump.c */
 void hexdump(unsigned long memory, int length);