[M] Change in coreboot[master]: mb/intel/mtlrvp: Add bootblock and early gpio for MTL-RVP

[Harsha B R (Code Review)]

Attention is currently required from: Ashish Kumar Mishra, Harsha B R, Haribalaraman Ramasubramanian, Rizwan Qureshi, Krishna P Bhat D, Balaji Manigandan, Ronak Kanabar, Usha P.

Hello build bot (Jenkins), Ashish Kumar Mishra, Haribalaraman Ramasubramanian, Rizwan Qureshi, Krishna P Bhat D, Balaji Manigandan, Eric Lai, Ronak Kanabar, Usha P,

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

https://review.coreboot.org/c/coreboot/+/69886

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

Change subject: mb/intel/mtlrvp: Add bootblock and early gpio for MTL-RVP
......................................................................

mb/intel/mtlrvp: Add bootblock and early gpio for MTL-RVP

This adds an initial bootblock code. This also configures required
GPIOs for early board initialization.

1. Add bootblock file for MTL-RVP
2. Add early gpio config for MTL-P variant in gpio.c

BRANCH=none
BUG=b:224325352
TEST=FW_NAME=mtlrvp_p emerge-rex coreboot chromeos-bootimage

Signed-off-by: Harsha B R 
Change-Id: I9c0893e52036147c5f6bbfafc6d818e9d3460bed
---
M src/mainboard/intel/mtlrvp/Makefile.inc
A src/mainboard/intel/mtlrvp/bootblock.c
M src/mainboard/intel/mtlrvp/variants/mtlrvp_p/Makefile.inc
M src/mainboard/intel/mtlrvp/variants/mtlrvp_p/gpio.c
4 files changed, 142 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/69886/2