set pwr_on_varybl_to_blon to 0x1c, which means fw will delay 112ms
between backlight on and vary backlight.
BUG=b:271704149
BRANCH=none
TEST=Build; Verify the UPD was passed to system integrated table;
measure the power on sequence on whiterun
Signed-off-by: Chris.Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: Ib966d2ebd4ef4a8085695901ec5da160f467e32e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73753
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
77c5d898ae