Change in coreboot[master]: soc/amd/common/block/pci: Implement acpigen_write_pci_{GNB,FCH}_PRT

[Felix Held (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Marshall Dawson.
Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52917 )

Change subject: soc/amd/common/block/pci: Implement acpigen_write_pci_{GNB,FCH}_PRT
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Patch Set 6:

(3 comments)

Patchset:

PS6: 
rest looks good for me

File src/soc/amd/common/block/pci/acpi_prt.c:

https://review.coreboot.org/c/coreboot/+/52917/comment/31fb9278_a9b9cfa9 
PS6, Line 98: LNKA
is this correct? from the code above, i'd assume to rather be \_SB.INTA

https://review.coreboot.org/c/coreboot/+/52917/comment/fc1532f4_42b64c21 
PS6, Line 167: LNKA
same here