kern/47786: usb 3.0 doesn't work

[dholland%netbsd.org@localhost]

>Number:         47786
>Category:       kern
>Synopsis:       usb 3.0 doesn't work
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 29 16:35:01 +0000 2013
>Originator:     David A. Holland
>Release:        current
>Organization:
>Environment:
n/a
>Description:

We don't have support for USB 3.0. It doesn't always fail in
comprehensible ways. (See for example PR 47603.)

I'm opening this PR to keep track of the underlying issue so that
47603 can be closed.

>How-To-Repeat:
>Fix: