p54usb: Device ID updates

This patch updates p54usb's device list.
It adds the ID for SMC 2862W-G v2 and marks the
"Spinnaker Proto board" as a first generation device.

Reported-by:  <jafg666@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>