Generalize ucidef_set_network_device functions to use a more generic
_ucidef_set_network_device_common that takes as args the option and the
value to apply instead of hardcoding.
This is to reduce duplicated code in preparation for addition of
additional option for board.d usage.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
da7ad22931