[M] Change in coreboot[main]: mb/asus/p8z77-v: Attempt to correctly route PCIe lanes

[Bill XIE (Code Review)]

Attention is currently required from: Angel Pons, Keith Hui, Nicholas Chin.

Bill XIE has posted comments on this change by Keith Hui. ( https://review.coreboot.org/c/coreboot/+/85413?usp=email )

Change subject: mb/asus/p8z77-v: Attempt to correctly route PCIe lanes
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Patch Set 7:

(1 comment)

File src/mainboard/asus/p8x7x-series/variants/p8z77-v/early_init.c:

https://review.coreboot.org/c/coreboot/+/85413/comment/1ff67ee4_f0eb851f?usp... :
PS7, Line 104: 0x40
> I have been looking at the magic values of 0x20/0x40/0x70, but after digging through vendor BIOS, looks like the actual values I need are 0x00/0x20/0x70.

I guess that these values are obtained on p8z77-v_le_plus. If so, they may not apply to p8z77-v.