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.
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 3: Code-Review+2

(7 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/63552/comment/704e1136_0d08e1b7 
PS3, Line 13: resume
`poweron`

https://review.coreboot.org/c/coreboot/+/63552/comment/152d1162_5af022b7 
PS3, Line 15: resume
`poweron`

https://review.coreboot.org/c/coreboot/+/63552/comment/05135ff4_dcfbf4de 
PS3, Line 31: resuming
`powering on`

https://review.coreboot.org/c/coreboot/+/63552/comment/b0bc57db_1a5a19e4 
PS3, Line 33: Upon resume
`During poweron`

https://review.coreboot.org/c/coreboot/+/63552/comment/95871e59_da675f0b 
PS3, Line 35: PMC tries to send the IPC command, finally, results into timeout.
`which results in a timeout.`

Patchset:

PS3: 
just some grammar sugggestion

File src/mainboard/google/brya/smihandler.c:

https://review.coreboot.org/c/coreboot/+/63552/comment/1844641d_47c9925a 
PS3, Line 16: ACPI_S5
> > did this also end up applying to S3? […]

fair point.