Change in coreboot[master]: soc/intel/alderlake/hsphy: Add support for HSPHY firmware loading

[Michał Kopeć (Code Review)]

Attention is currently required from: Michał Żygowski, Maulik V Vaghela, Jeremy Soller, Michał Kopeć, Tim Wawrzynczak, Paul Menzel, Ronak Kanabar.
Michał Kopeć has uploaded a new patch set (#5) to the change originally created by Michał Żygowski. ( https://review.coreboot.org/c/coreboot/+/64074 )

Change subject: soc/intel/alderlake/hsphy: Add support for HSPHY firmware loading
......................................................................

soc/intel/alderlake/hsphy: Add support for HSPHY firmware loading

BIOS must send the IP_LOAD HECI command to fetch the firmware for CPU
PCIe Gen5 and upload it via CPU REG BAR prior FSP Silicon Init.
Implementation based on Slimbootloader's
"Silicon/AlderlakePkg/Library/CpuPcieHsPhyInitLib" and FSP source.

TEST=Boot MSI PRO Z690-A and see the HSPHY FW is loaded and its recipe
and version is printed.

Signed-off-by: Michał Żygowski 
Change-Id: I6c6c11581e3d3d9bab0131fae6ef487cafe98080
Signed-off-by: Michał Kopeć 
---
M src/soc/intel/alderlake/Makefile.inc
M src/soc/intel/alderlake/chip.c
A src/soc/intel/alderlake/hsphy.c
A src/soc/intel/alderlake/include/soc/hsphy.h
4 files changed, 364 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/64074/5