Change in coreboot[master]: libpayload/pci: Add PCIe interfaces for MediaTek platform

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Hung-Te Lin, Paul Menzel, Angel Pons, Jianjun Wang.
Yu-Ping Wu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56794 )

Change subject: libpayload/pci: Add PCIe interfaces for MediaTek platform
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Patch Set 38:

(3 comments)

File payloads/libpayload/drivers/pcie_mediatek.c:

https://review.coreboot.org/c/coreboot/+/56794/comment/d4cdfa91_64b7d90a 
PS38, Line 22: 	pcie_base = base;
The base address can be stored in the coreboot table. We may need to wait for CB:57614 (or you can create a similar patch).

https://review.coreboot.org/c/coreboot/+/56794/comment/694e5d23_528e5b58 
PS38, Line 29: & 0x7
Already included in the macro.

https://review.coreboot.org/c/coreboot/+/56794/comment/273f9af1_455ae28f 
PS38, Line 29: & 0x1f
Already included in the macro.