Add the UPD updating hook in early stage for customization.
BUG=b:117719313
BRANCH=zork
TEST=build,check the hook function been executed.
Signed-off-by: Chris Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: I4954a438a51b29b086015624127e651fd06f971b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51181
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
216d69d459