[L] Change in coreboot[main]: soc/xeon_sp: Initially add IBL codes

[Jincheng Li (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, David Hendricks, Jincheng Li, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Patrick Rudolph, TangYiwei, Tim Chu.

Jincheng Li has uploaded a new patch set (#5) to the change originally created by Shuo Liu. ( https://review.coreboot.org/c/coreboot/+/81315?usp=email )

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: soc/xeon_sp: Initially add IBL codes
......................................................................

soc/xeon_sp: Initially add IBL codes

IBL (Integrated Boot Logic) codes are initially forked from EBG
(Emmitsburg PCH) codes (src/soc/intel/xeon_sp/ebg).

Change-Id: I5de2d2f4985b4677dbc156fd8b158c0ab0e46342
Signed-off-by: Shuo Liu 
---
A src/soc/intel/xeon_sp/ibl/Makefile.mk
A src/soc/intel/xeon_sp/ibl/include/soc/azalia_device.h
A src/soc/intel/xeon_sp/ibl/include/soc/gpio_soc_defs.h
A src/soc/intel/xeon_sp/ibl/include/soc/pcr_ids.h
A src/soc/intel/xeon_sp/ibl/include/soc/pmc.h
A src/soc/intel/xeon_sp/ibl/include/soc/soc_pch.h
A src/soc/intel/xeon_sp/ibl/include/soc/soc_pm.h
A src/soc/intel/xeon_sp/ibl/lockdown.c
A src/soc/intel/xeon_sp/ibl/soc_gpio.c
A src/soc/intel/xeon_sp/ibl/soc_pch.c
A src/soc/intel/xeon_sp/ibl/soc_pmutil.c
M src/soc/intel/xeon_sp/include/soc/pch_pci_devs.h
12 files changed, 903 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/15/81315/5