All octeon devices use the same or a very similar way to backup
and restore configuration.
We expect to have more devices added and in order to stop
repeating ourselves move the logic to a separate function.
While at it, add a few checks.
Signed-off-by: Roman Kuzmitskii <damex.pp@icloud.com>
[commit message facelift]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: maurerr <mariusd84@gmail.com>
f2fb93929a