[S] Change in coreboot[main]: soc/intel/*: Check usb_cfg isn't NULL before changing it

[Sean Rhodes (Code Review)]

Sean Rhodes has abandoned this change. ( https://review.coreboot.org/c/coreboot/+/84824?usp=email )

Change subject: soc/intel/*: Check usb_cfg isn't NULL before changing it
......................................................................

Abandoned

Meh