Apply the change http://review.coreboot.org/1265 to all the AMD northbridge. Change-Id: Idf3994c1e9ec76cd19db9f740d825cf24059884f Signed-off-by: Zheng Bao <zheng.bao@amd.com> Signed-off-by: zbao <fishbaozi@gmail.com> Reviewed-on: http://review.coreboot.org/1404 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>