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 17:

(3 comments)

File src/soc/intel/common/pch/lockdown/lockdown.c:

https://review.coreboot.org/c/coreboot/+/63198/comment/9d8e00e3_075de4ba 
PS12, Line 28: dmi_lockdown_cfg
> can you please try like this at it's source CL first? CB:63471 […]

Do we still need this?  I think we don't need this anymore.

File src/soc/intel/common/pch/lockdown/lockdown.c:

https://review.coreboot.org/c/coreboot/+/63198/comment/81cb0587_51fbe933 
PS16, Line 31:  of DMI
Remove this

https://review.coreboot.org/c/coreboot/+/63198/comment/72a83afe_bd125ad6 
PS16, Line 46: 	if (!CONFIG(SOC_INTEL_COMMON_BLOCK_IOC))
This cause compile error due to GPMR_DMICTL and GPMR_DMICTL_SRLOCK are not exist in IOC register.  Need to use
#if !CONFIG(SOC_INTEL_COMMON_BLOCK_IOC)
#endif