Change in coreboot[master]: soc/mediatek/mt8195: Enable PCIe support

[Jianjun Wang (Code Review)]

Attention is currently required from: Hung-Te Lin, Arthur Heymans, Paul Menzel.
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/+/56793

to look at the new patch set (#21).

Change subject: soc/mediatek/mt8195: Enable PCIe support
......................................................................

soc/mediatek/mt8195: Enable PCIe support

Enable PCIe support for mt8195.

TEST=Build pass and boot up to kernel successfully via SSD on Dojo
board, here is the SSD information in boot log:
 == NVME IDENTIFY CONTROLLER DATA ==
    PCI VID   : 0x15b7
    PCI SSVID : 0x15b7
    SN        : 21517J440114
    MN        : WDC PC SN530 SDBPTPZ-256G-1006
    RAB       : 0x4
    AERL      : 0x7
    SQES      : 0x66
    CQES      : 0x44
    NN        : 0x1
Identified NVMe model WDC PC SN530 SDBPTPZ-256G-1006

BUG=b:178565024

Signed-off-by: Jianjun Wang 
Change-Id: I314572955f1021abe9f2f0f4635670135ed08fff
---
M src/soc/mediatek/mt8195/Kconfig
M src/soc/mediatek/mt8195/soc.c
2 files changed, 14 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/93/56793/21