[S] Change in coreboot[main]: vendorcode/google/chromeos: Add API for Chromebook Plus check

[Subrata Banik (Code Review)]

Attention is currently required from: Eric Lai, Kapil Porwal, Shelley Chen.

Hello Eric Lai, Kapil Porwal, Shelley Chen, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/79763?usp=email

to look at the new patch set (#3).

The following approvals got outdated and were removed: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

Change subject: vendorcode/google/chromeos: Add API for Chromebook Plus check
......................................................................

vendorcode/google/chromeos: Add API for Chromebook Plus check

This patch implements an API which relies on the
chromeos_get_factory_config() function to retrieve the factory
config value.

This information is useful to determine whether a ChromeOS device
is branded as a Chromebook Plus based on specific bit flags:

- Bit 4 (0x10): Indicates whether the device chassis has the
                  "chromebook-plus" branding.
   - Bits 3-0 (0x1): Must be 0x1 to signify compliance with
    	   Chromebook Plus hardware specifications.

BUG=b:317880956
TEST=Able to verify that google/screebo is branded as
Chromebook Plus.

Change-Id: Iebaed1c60e34af4cc36316f1f87a89df778b0857
Signed-off-by: Subrata Banik 
---
M src/vendorcode/google/chromeos/chromeos.h
M src/vendorcode/google/chromeos/tpm_factory_config.c
2 files changed, 38 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/79763/3