This include file needs to be prevented from being included multiple times. Change-Id: I42e0cbe38d332b919f22e331eaf7a0251929e1dc Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/1293 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins)