Change in coreboot[master]: Documentation/RFC: Generalize PCI support in coreboot

[Shelley Chen (Code Review)]

Attention is currently required from:  Felix Singer, Nico Huber, Furquan Shaikh, Martin Roth, Tim Wawrzynczak, Paul Menzel, Julius Werner, Angel Pons, Kyösti Mälkki.
Shelley Chen has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57861 )

Change subject: Documentation/RFC: Generalize PCI support in coreboot
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Patch Set 7:

(3 comments)

File Documentation/RFC/pci_config_access.md:

https://review.coreboot.org/c/coreboot/+/57861/comment/43a74945_906b9a2f 
PS2, Line 35: only map a subset of their PCI
            : devices into system memory at a time.
> mention similarity to Mechanism #2 from PCI Local Bus Specs 2. […]

Done

File Documentation/RFC/pci_config_access.md:

https://review.coreboot.org/c/coreboot/+/57861/comment/99e088cc_4461dc6e 
PS5, Line 25: or enhanced configuration access mechanism,
> nit: already spelled out above on line 9

Done

https://review.coreboot.org/c/coreboot/+/57861/comment/b3f6342c_f460a859 
PS5, Line 32: In ChromeOS, on the other hand,
> I think this is specific to the ARM SoCs, not really ChromeOS. […]

Done