Change in coreboot[master]: soc/mediatek: PCIe: Assert PERST# at bootblock stage

[Paul Menzel (Code Review)]

Attention is currently required from: Shelley Chen, Rex-BC Chen, Angel Pons, Yu-Ping Wu, Jianjun Wang.
Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62359 )

Change subject: soc/mediatek: PCIe: Assert PERST# at bootblock stage
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Patch Set 18:

(3 comments)

Patchset:

PS18: 
Reading the commit message, and then the diff, I am a little confused. Maybe state somewhere, that the preinit only does the assert?

File src/mainboard/google/cherry/bootblock.c:

https://review.coreboot.org/c/coreboot/+/62359/comment/73c1dd36_27eaa355 
PS18, Line 48: 		mtk_pcie_pre_init();
So, this needs to be done for each mainboard, and cannot be done in SOC code?

File src/soc/mediatek/mt8195/Makefile.inc:

https://review.coreboot.org/c/coreboot/+/62359/comment/4c930cf4_98da4303 
PS18, Line 11: bootblock-$(CONFIG_PCI) += pcie.c
This could be a separate commit.