[M] Change in coreboot[master]: device/xhci: Factor out common PORTSC code

[Robert Zieba (Code Review)]

Attention is currently required from: Robert Zieba, Tarun Tuli, Nick Vaccaro, Angel Pons.

Hello build bot (Jenkins), Raul Rangel, Tarun Tuli, Subrata Banik, Nick Vaccaro,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/67933

to look at the new patch set (#6).

Change subject: device/xhci: Factor out common PORTSC code
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device/xhci: Factor out common PORTSC code

This commit factors out some code for XHCI port status values.

BUG=b:186792595
TEST=Built coreboot for volteer device

Change-Id: I045405ed224aa8f48f6f628b7d49ec6bafb450d7
Signed-off-by: Robert Zieba 
---
M src/include/device/xhci.h
M src/soc/intel/common/block/xhci/elog.c
2 files changed, 57 insertions(+), 39 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/33/67933/6