[L] Change in coreboot[master]: drivers/intel/fsp2_0: Add API to convert BMP images to GOP BLT buffer

[Subrata Banik (Code Review)]

Attention is currently required from: Andrey Petrov, Kapil Porwal, Nick Vaccaro.

Hello Andrey Petrov, Kapil Porwal, Nick Vaccaro, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/76921?usp=email

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

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: drivers/intel/fsp2_0: Add API to convert BMP images to GOP BLT buffer
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drivers/intel/fsp2_0: Add API to convert BMP images to GOP BLT buffer

This patch adds an API to convert BMP images into GOP BLT buffers for
Intel FSP-S. This is required to display the OEM splash screen at
pre-boot phase.

Previously, Intel FSP-S had provision to consume the *.BMP file as is.
However, starting with the Alder Lake platform, Intel FSP has dropped
this conversion logic and expects the bootloader to pass the BLT buffer
directly.

This patch implements the conversion logic in coreboot. It also adds a
new config (BMP_LOGO_TO_GOP_BLT) to ensure backward compatibility with
older generation FSP.

BUG=b:284799726
TEST=Able to build and boot google/rex

Signed-off-by: Subrata Banik 
Change-Id: I992b45d65374f09498ff0cab497f7091e1e7a350
---
M src/drivers/intel/fsp2_0/Kconfig
M src/drivers/intel/fsp2_0/Makefile.inc
A src/drivers/intel/fsp2_0/fsp_gop_blt.c
A src/drivers/intel/fsp2_0/include/fsp/fsp_gop_blt.h
4 files changed, 295 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/21/76921/2