[ARM] Orion: register UART1 on QNAP TS-209 and TS-409

Register UART1 on QNAP TS-209 and TS-409 because the PIC controller
is connected to it.  This fixes a regression from 2.6.26.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>