[M] Change in coreboot[main]: Choose Correct FW splash screen at runtime

[Subrata Banik (Code Review)]

Attention is currently required from: Andrey Petrov, Julius Werner, Ronak Kanabar, Shelley Chen, Subrata Banik.

Subrata Banik has uploaded a new patch set (#8) to the change originally created by Shelley Chen. ( https://review.coreboot.org/c/coreboot/+/79775?usp=email )

The following approvals got outdated and were removed:
Code-Review+1 by Subrata Banik, Verified+1 by build bot (Jenkins)

Change subject: Choose Correct FW splash screen at runtime
......................................................................

Choose Correct FW splash screen at runtime

This CL uses the factory config that is retrieved by the TPM in order
to determine if the device is a chromebook or a chromebook plus device
at runtime.  From this it will dynamically choose the correct FW
splash screen to display at boot time.

This CL also introduces three new Kconfigs:
    CHROMEOS_FW_SPLASH_SCREEN
    CB_LOGO_PATH
    CB_PLUS_LOGO_PATH
which allow users to enable the fw splash screen feature in the
vendorcode.  Previously, we were using the BMP_LOGO Kconfig in
drivers/intel/fsp2_0, but we didn't want the top level Kconfigs to be
located inside the architecture specific files.

BUG=b:317880956
BRANCH=None
TEST=emerge-rex coreboot chromeos-bootimage
     verify that FW splash screen appears

Change-Id: I56613d1e7e81e25b31ad034edae0f716c94c4960
Signed-off-by: Shelley Chen 
---
M src/drivers/intel/fsp2_0/Makefile.inc
M src/include/bootsplash.h
M src/lib/Kconfig
M src/lib/bmp_logo.c
M src/vendorcode/google/chromeos/Kconfig
M src/vendorcode/google/chromeos/Makefile.inc
A src/vendorcode/google/chromeos/splash.c
7 files changed, 68 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/75/79775/8