Change in coreboot[master]: sc7280: Add PCIe host controller driver

[Sudheer Amrabadi (Code Review)]

Attention is currently required from: Ravi Kumar Bokka, Nico Huber, Furquan Shaikh, Paul Menzel, Sudheer Amrabadi, Julius Werner, Prasad Malisetty, mturney mturney.
Sudheer Amrabadi has uploaded a new patch set (#100) to the change originally created by Ravi Kumar Bokka. ( https://review.coreboot.org/c/coreboot/+/53902 )

Change subject: sc7280: Add PCIe host controller driver
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sc7280: Add PCIe host controller driver

Add support for PCIe host driver to configure
in RC (root complex) mode. Host driver will power on
the PHY, enable the PCIe link and start the bus enumeration.

BUG=b:182963902,b:216686574,b:181098581
TEST=Validated on qualcomm sc7280 development board

Change-Id: Iccf60aa56541f5230fa9c3f821d7709615c36631
Signed-off-by: Prasad Malisetty 
---
M src/mainboard/google/herobrine/mainboard.c
M src/soc/qualcomm/sc7280/Makefile.inc
M src/soc/qualcomm/sc7280/include/soc/addressmap.h
A src/soc/qualcomm/sc7280/include/soc/pcie.h
A src/soc/qualcomm/sc7280/include/soc/qcom_qmp_phy.h
A src/soc/qualcomm/sc7280/pcie_host.c
6 files changed, 1,591 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/02/53902/100