Change in coreboot[master]: soc/intel/common: Implement IOC driver

[Wonkyu Kim (Code Review)]

Attention is currently required from: Jamie Ryu, Subrata Banik, Ethan Tsao, Ravishankar Sarawadi, Paul Menzel, Tim Wawrzynczak, Angel Pons, Nick Vaccaro.
Hello build bot (Jenkins), Jamie Ryu, Subrata Banik, Ethan Tsao, Ravishankar Sarawadi, Nick Vaccaro, Tim Wawrzynczak,

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

https://review.coreboot.org/c/coreboot/+/63198

to look at the new patch set (#18).

Change subject: soc/intel/common: Implement IOC driver
......................................................................

soc/intel/common: Implement IOC driver

Starting with Meteor Lake SoC, the PCR/DMI interface to program GPMR
is replaced with IOC (I/O Cache), hence, this patch implements IOC
driver to support that migration.

Reference: 643504 MTL FAS section 7.5.2

TEST=Build and boot to OS for TGL RVP and MTL PSS

Signed-off-by: Wonkyu Kim 
Change-Id: I768027c2ca78310c03845f70f17df19dc8cd0982
---
M src/soc/intel/common/block/gpmr/gpmr.c
M src/soc/intel/common/block/include/intelblocks/gpmr.h
A src/soc/intel/common/block/include/intelblocks/ioc.h
A src/soc/intel/common/block/include/intelblocks/ioc_gpmr.h
M src/soc/intel/common/block/include/intelblocks/systemagent.h
A src/soc/intel/common/block/ioc/Kconfig
A src/soc/intel/common/block/ioc/Makefile.inc
A src/soc/intel/common/block/ioc/ioc.c
M src/soc/intel/common/block/systemagent/systemagent_early.c
M src/soc/intel/common/pch/lockdown/lockdown.c
10 files changed, 124 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/63198/18