This change can make the code be more flexible. And later we will use amd_cb_config to transfer parameters. Change-Id: Ic726aa9fc5f67803210af71d3e9cf2438b7e2a9b Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/57062 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>