arm: kirkwood: NSA310S: Add device tree DTS for Zyxel NSA310S board

Add device tree kirkwood-nsa310s.dts for Zyxel NSA310S board to
convert to Driver Model.

Signed-off-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2 files changed