usb/162712: added device on if_run.

[miwi at FreeBSD.org]

Synopsis: added device on if_run.

State-Changed-From-To: open->closed
State-Changed-By: miwi
State-Changed-When: Sun Jan 29 08:07:52 UTC 2012
State-Changed-Why: 
already committed and mfc.

http://www.freebsd.org/cgi/query-pr.cgi?pr=162712