[S] Change in coreboot[main]: soc/intel/xeon_sp: Make use of PCI driver for xHCI

[Shuo Liu (Code Review)]

Attention is currently required from: Christian Walter, Johnny Lin, Jonathan Zhang, Patrick Rudolph, Tim Chu.

Shuo Liu has posted comments on this change by Patrick Rudolph. ( https://review.coreboot.org/c/coreboot/+/85808?usp=email )

Change subject: soc/intel/xeon_sp: Make use of PCI driver for xHCI
......................................................................

Patch Set 3: Code-Review+2

(1 comment)

File src/soc/intel/xeon_sp/ebg/soc_xhci.c:

https://review.coreboot.org/c/coreboot/+/85808/comment/896078a3_61a2fa27?usp... :
PS3, Line 52: 
Maybe add a comment to indicate it will be called at src/soc/intel/common/block/xhci/xhci.c?