AMD K8 (rev F): Move rev F0/F1 workaround to header

Place this in header so it works also when raminit_f.c and
raminit_f_dqs.c are not #included in romstage.c build.

The workaround remains to be disabled for all boards.

Change-Id: Iff0271ceb21ee1e28a1a31d6bbdb97e29d76461e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/4568
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/northbridge/amd/amdk8/amdk8.h

@@ -3,6 +3,9 @@
 #define AMDK8_H
 
 #if CONFIG_K8_REV_F_SUPPORT
+
+#define K8_REV_F_SUPPORT_F0_F1_WORKAROUND 0
+
         #include "f.h"
 #else
         #include "pre_f.h"