This device is still in PR state in OpenWrt, since ar71xx target
is deprecated and thus lacking reviewers.
It worked nicely for me anyway, so I include the current state of
the PR (has not changed for months).

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Reviewed-by: Christian Dresel <fff@chrisi01.de>