Change in coreboot[master]: soc/intel/common: Add PMC Crashlog PCI driver

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Francois Toguo Fotso, Subrata Banik, Jonathan Zhang, Daocheng Bu, Kane Chen, Patrick Rudolph, Karthik Ramasubramanian, Tim Chu.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57684 )

Change subject: soc/intel/common: Add PMC Crashlog PCI driver
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Patch Set 9:

(2 comments)

File src/soc/intel/common/Kconfig.common:

https://review.coreboot.org/c/coreboot/+/57684/comment/0f51cad6_8bbeec2e 
PS9, Line 40: 	  crashlog record on every boot.
> Do you mean "enables the PMC crashlog driver to collect crashlog records on every reset"? If the PMC […]

You can configure the PMC so that it will collect a trace of its activity during boot; so if you enable the Kconfig, it will send that message on every boot, hence every warm reboot will contain a PMC crashlog trace only.

File src/soc/intel/common/block/crashlog/pmc_crashlog.c:

https://review.coreboot.org/c/coreboot/+/57684/comment/3bab3ad0_050b75f4 
PS9, Line 269:
> Once crashlog records are collected, should we clear the records?

Yep, that's part of the `enable` flow, see line 292