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 2d6f0275f89428ff8da5f796e6e446b2b3f95a7c)