[coreboot-gerrit] Change in coreboot[master]: soc/mediatek: Add PCIe support

[Jianjun Wang (Code Review)]

Attention is currently required from: Hung-Te Lin.
Hello Hung-Te Lin, build bot (Jenkins), Yu-Ping Wu,

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

https://review.coreboot.org/c/coreboot/+/56791

to look at the new patch set (#3).

Change subject: soc/mediatek: Add PCIe support
......................................................................

soc/mediatek: Add PCIe support

Add PCIe support for MediaTek platform and the prototype of pcicfg for
the platforms not support ECAM.

Signed-off-by: Jianjun Wang 
Change-Id: Ib9b6adaafa20aeee136372ec9564273f86776da0
---
M src/include/device/pci_mmio_cfg.h
A src/soc/mediatek/common/include/soc/pcie_common.h
A src/soc/mediatek/common/pcie.c
3 files changed, 376 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/56791/3