asix: new device id

Adds the device id needed for the USB Ethernet Adapter delivered by
ASUS with their Zenbook.

Signed-off-by: Aurelien Jacobs <aurel@gnuage.org>
Acked-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>