cpu/intel/romstage.h is needed so the the main() has a prototype in freestanding. Change-Id: I5e6afef82a4f63ab42927725adf3881084a1e25c Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/7235 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins)