[coreboot-gerrit] Change in coreboot[master]: device/xhci: Add an xhci driver to enumerate capabilities

[Raul Rangel (Code Review)]

Hello build bot (Jenkins), Furquan Shaikh, Patrick Georgi, Martin Roth, Paul Menzel, Aaron Durbin, Felix Held,

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

https://review.coreboot.org/c/coreboot/+/41899

to look at the new patch set (#2).

Change subject: device/xhci: Add an xhci driver to enumerate capabilities
......................................................................

device/xhci: Add an xhci driver to enumerate capabilities

This will allow enumerating an xHCI controller to allow dynamically
generating the ACPI device nodes.

BUG=b:154756391
TEST=Boot trembyle and see capabilities printed on console
xHCI Supported Protocol:
  Major: 0x2, Minor: 0x0, Protocol: 'USB '
  Port Offset: 1, Port Count: 2
xHCI Supported Protocol:
  Major: 0x3, Minor: 0x10, Protocol: 'USB '
  Port Offset: 3, Port Count: 1

Signed-off-by: Raul E Rangel 
Change-Id: I3065c3fffad01b5378a55cfe904f971079b13d0f
---
M src/device/Makefile.inc
A src/device/xhci.c
A src/include/device/xhci.h
3 files changed, 139 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/99/41899/2