[M] Change in coreboot[master]: mb/google/geralt: Configure firmware display for eDP panel

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin, Rex-BC Chen.

Hello Hung-Te Lin, build bot (Jenkins), Angel Pons, Yu-Ping Wu, Yidi Lin,

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

https://review.coreboot.org/c/coreboot/+/68490

to look at the new patch set (#8).

Change subject: mb/google/geralt: Configure firmware display for eDP panel
......................................................................

mb/google/geralt: Configure firmware display for eDP panel

Add eDP panel power-on sequences and initialize the display in the
ramstage.

BUG=b:244208960
TEST=see firmware display using eDP panel in MT8188 EVB.

Signed-off-by: Bo-Chen Chen 
Change-Id: I67e0699c976c6f85e69d40d77154420c983b715e
---
M src/mainboard/google/geralt/Kconfig
M src/mainboard/google/geralt/Makefile.inc
A src/mainboard/google/geralt/display.c
A src/mainboard/google/geralt/display.h
M src/mainboard/google/geralt/gpio.h
M src/mainboard/google/geralt/mainboard.c
6 files changed, 105 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/90/68490/8