arm: kirkwood: add support for Synology DS109 board

Synology DS109 is based on MV88F6281. The code
is based on Dreamplug code with modificatons
from Synologys open source repository.

Signed-off-by: Walter Schweizer <swwa@users.sourceforge.net>
Signed-off-by: Stefan Roese <sr@denx.de>
9 files changed