[M] Change in coreboot[master]: soc/intel/common/block: Add Intel VGA early graphics support

[Jérémy Compostella (Code Review)]

Attention is currently required from: Bora Guvendik, Zhixing Ma, Anil Kumar K, Hannah Williams, Cliff Huang, Nico Huber, Michał Żygowski, Subrata Banik, Jérémy Compostella, Paul Menzel, Arthur Heymans, Swift Geek (Sebastian Grzywna).

Hello Bora Guvendik, build bot (Jenkins), Anil Kumar K, Cliff Huang, Paul Menzel, Angel Pons, Arthur Heymans, Zhixing Ma, Tarun Tuli, Nico Huber, Michał Żygowski, Subrata Banik, Nick Vaccaro, Swift Geek (Sebastian Grzywna), Boris Mittelberg,

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

https://review.coreboot.org/c/coreboot/+/70299

to look at the new patch set (#33).

Change subject: soc/intel/common/block: Add Intel VGA early graphics support
......................................................................

soc/intel/common/block: Add Intel VGA early graphics support

This patch introduces an early graphics driver which can be used in
romstage in cache-as-ram mode. The implementation relies on
`libgfxinit' and provide VGA text mode support.

SoCs wanting to take advantage of this driver must implement the
`early_graphics_soc_panel_init' function to set the panel power
sequence timing parameters.

BUG=b:252792591
BRANCH=firmware-brya-14505.B
TEST=Graphics bring up observed on skolas with extra patches

Change-Id: Ie4ad1215e5fadd0adc1271b6bd6ddb0ea258cb5b
Signed-off-by: Jeremy Compostella 
---
M src/drivers/intel/gma/gma-gfx_init.ads
M src/drivers/intel/gma/hires_fb/gma-gfx_init.adb
M src/drivers/intel/gma/libgfxinit.h
M src/drivers/intel/gma/text_fb/gma-gfx_init.adb
M src/soc/intel/common/block/graphics/Kconfig
M src/soc/intel/common/block/graphics/Makefile.inc
A src/soc/intel/common/block/graphics/early_graphics.c
A src/soc/intel/common/block/include/intelblocks/early_graphics.h
8 files changed, 138 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/99/70299/33