Add network config for single-port Gateworks venice boards such that the
ethernet port is the WAN port instead of the default being a LAN port.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Link: https://github.com/openwrt/openwrt/pull/18629
Signed-off-by: Robert Marko <robimarko@gmail.com>
(cherry picked from commit 2d6f0275f8)