usb/161559: Add LOGITECH Webcam C100 into usbdevs

[miwi at FreeBSD.org]

Synopsis: Add LOGITECH Webcam C100 into usbdevs

Responsible-Changed-From-To: freebsd-usb->miwi
Responsible-Changed-By: miwi
Responsible-Changed-When: Wed Nov 16 18:04:28 UTC 2011
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=161559