[coreboot-gerrit] Change in coreboot[master]: mb/google/brya: Reset XHCI controller while preparing for S5

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Subrata Banik, Maulik V Vaghela, Sridhar Siricilla, Nick Vaccaro, Eric Lai, Felix Held.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63552 )

Change subject: mb/google/brya: Reset XHCI controller while preparing for S5
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Patch Set 4: Code-Review+1

(1 comment)

Patchset:

PS4:
> There may be an official fix from Intel later, hopefully this is just a temporary workaround.

Right now the only mechanism for custom code in the SMI sleep path is  `mainboard_smi_sleep()`, although I suppose we could add one.