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

[Raul Rangel (Code Review)]

Attention is currently required from: Jason Glenesk, Marshall Dawson, Felix Held.
Hello build bot (Jenkins), Jason Glenesk, Marshall Dawson, Felix Held,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/52917

to look at the new patch set (#4).

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

soc/amd/common/block/pci: Implement acpigen_write_pci_{GNB,FCH}_PRT

This is loosely based off of picasso/pcie_gpp.c. This version uses the
acpigen_write_PRT_X methods to write the actual records. There are also
two functions, 1 for using the GNB, and one for using the FCH. The FCH
one is useful when the GNB IO-APIC has not been initialized.

BUG=b:184766519
TEST=Dump guybrush ACPI and verify it looks correct

Signed-off-by: Raul E Rangel 
Change-Id: I926430074acb969ceb11fdb60ab56dcf91ac4c76
---
M src/soc/amd/common/block/include/amdblocks/amd_pci_util.h
M src/soc/amd/common/block/pci/Makefile.inc
A src/soc/amd/common/block/pci/acpi_prt.c
3 files changed, 217 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/17/52917/4