mb/google/brya/var/agah: Update PEXVDD enable GPIO for next board rev
The next rev of this board will move the dGPU PEXVDD enable pin from
GPP_E10 to GPP_F12. This patch handles both the old and newer revisions
by using an ACPI Name to hold the GPIO # for PEXVDD enable. It also
cleans up the GPIO handling a little bit between board revs.
BUG=b:
242752623
TEST=dGPU is functional and power sequencing tests still pass on board
rev 2
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Icc7968777f86ab07561b0a861b7d22ec714d1c34
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67765
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>