[coreboot-gerrit] Change in coreboot[master]: drivers/intel/usb4: Enable retimer FW upgrade mux interaction

[John Zhao (Code Review)]

Attention is currently required from: Duncan Laurie, Tim Wawrzynczak, John Zhao, Rajmohan Mani, Brandon Breitenstein.
John Zhao has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/48630 )

Change subject: drivers/intel/usb4: Enable retimer FW upgrade mux interaction
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Patch Set 17:

(1 comment)

File src/drivers/intel/usb4/retimer/retimer.c:

https://review.coreboot.org/c/coreboot/+/48630/comment/dbc3f252_ebff8295 
PS16, Line 99:
> Returning both 0 and 255/-1 is not picked up the kernel as an error. […]

done