[M] Change in coreboot[master]: mb/intel/mtlrvp: Add MTL-P RVP board ids

[Harsha B R (Code Review)]

Attention is currently required from: Wonkyu Kim, Ravishankar Sarawadi, Rizwan Qureshi, Angel Pons, Krishna P Bhat D, Tim Wawrzynczak, Tarun Tuli, Jamie Ryu, Subrata Banik, Kapil Porwal, Nick Vaccaro, Ronak Kanabar, Raj Astekar.

Harsha B R has uploaded a new patch set (#13) to the change originally created by Jamie Ryu. ( https://review.coreboot.org/c/coreboot/+/66102 )

Change subject: mb/intel/mtlrvp: Add MTL-P RVP board ids
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mb/intel/mtlrvp: Add MTL-P RVP board ids

This adds MTL-P board id definition. Change include,
1. Add new board_id.c
2. Add new board_id.h
3. Add board_id config in variants.h
4. Makefile changes

BUG=b:224325352
TEST=util/abuild/abuild -p none -t intel/mtlrvp -a -c max

Signed-off-by: Jamie Ryu 
Change-Id: I90b0543d5db208f696d2c2c2dc3d2581514a845b
Signed-off-by: Harsha B R 
---
M src/mainboard/intel/mtlrvp/Makefile.inc
A src/mainboard/intel/mtlrvp/board_id.c
A src/mainboard/intel/mtlrvp/board_id.h
A src/mainboard/intel/mtlrvp/variants/baseboard/include/baseboard/variants.h
4 files changed, 91 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/02/66102/13