Add method variant_romstage_gpio_table() with empty implementation to
be used in a subsequent commit for touchscreen power sequencing.
Call method in romstage to program any GPIOs that may need to be set.
TEST=tested with rest of patch train
Change-Id: I11b72a10a4a105385fbcf1d795c020708a7a90d9
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74236
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
08da6eff8a