[S] Change in coreboot[master]: soc/amd/mendocino: Update XHCI GPE to use constant

[Paul Menzel (Code Review)]

Attention is currently required from: Robert Zieba, Jason Glenesk, Raul Rangel, Matt DeVillier, Fred Reitberger, Felix Held.

Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69916 )

Change subject: soc/amd/mendocino: Update XHCI GPE to use constant
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Patch Set 2:

(4 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/69916/comment/31aefe1b_136986f4 
PS2, Line 10: This commit changes
This is redundant, and imperative mood could be used.
> …, so change existing code over to use ….

https://review.coreboot.org/c/coreboot/+/69916/comment/7037349d_d1c79d11 
PS2, Line 9: The GPE number used for XHCI has now been defined
           : in AMD's common code.
Please reference the commit.

https://review.coreboot.org/c/coreboot/+/69916/comment/4e1633ba_67140f30 
PS2, Line 9: The GPE number used for XHCI has now been defined
           : in AMD's common code. This commit changes over existing
           : code to use this new definition.
Please reflow for 72 characters per line. (It fits in two lines.)

File src/soc/amd/common/block/xhci/elog.c:

https://review.coreboot.org/c/coreboot/+/69916/comment/87a29e07_4d09a3af 
PS2, Line 56: 	switch (protocol->major_rev) {
This seems like a separate bug fix. Please split it into a separate commit.