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.
Wonkyu Kim has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63198 )

Change subject: soc/intel/common: Implement IOC driver
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Patch Set 19:

(4 comments)

File src/soc/intel/common/block/include/intelblocks/systemagent.h:

https://review.coreboot.org/c/coreboot/+/63198/comment/a2085ca5_a791cfa5 
PS18, Line 56: sa_get_mchbar_base
> suggestion: to submit as a separate CL.

Ack

File src/soc/intel/common/block/ioc/ioc.c:

https://review.coreboot.org/c/coreboot/+/63198/comment/c87b0af6_16ceab8d 
PS18, Line 16:
> remove this ?

Ack

https://review.coreboot.org/c/coreboot/+/63198/comment/2030715f_69aac47f 
PS18, Line 23:
> same

Ack

File src/soc/intel/common/block/systemagent/systemagent_early.c:

https://review.coreboot.org/c/coreboot/+/63198/comment/20e74d89_92e6ccac 
PS18, Line 83: sa_get_mchbar_base
> may be, you can submit this as separator CL as a base, then it would be easy.

Ack