[M] Change in coreboot[master]: mb/google/dedede: Implement touchscreen power sequencing

[Matt DeVillier (Code Review)]

Hello build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/71187

to look at the new patch set (#2).

Change subject: mb/google/dedede: Implement touchscreen power sequencing
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mb/google/dedede: Implement touchscreen power sequencing

For touchscreens on dedede variants, drive the enable GPIO high
starting in romstage, then disable the reset GPIO in ramstage. This will
allow coreboot to detect the presence of i2c touchscreens during ACPI
SSDT generation (implemented in a subsequent commit).

Since the fast majority of dedede variants have a touchscreen option, and
those that do use the same GPIOs for enable/reset, set the GPIOs for
touchscreen operation in the baseboard and then override for the few (3)
variants that do not have a touchscreen.

BUG=b:121309055
TEST=tested with rest of patch train

Change-Id: Ib95e23545cc3e8589ddbd9e18cd0533bec9333e0
Signed-off-by: Matt DeVillier 
---
M src/mainboard/google/dedede/variants/baseboard/gpio.c
M src/mainboard/google/dedede/variants/beadrix/gpio.c
M src/mainboard/google/dedede/variants/cappy2/gpio.c
M src/mainboard/google/dedede/variants/sasuke/gpio.c
4 files changed, 85 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/87/71187/2