Usbnet adds a padding byte if a 0 byte USB packet would be sent. Zero
padding byte if there is tail room in skb.
Signed-of-by: NPeter Korsgaard <jacmet@sunsite.dk>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>