Avoids having to set the MAC in userspace.
Also added a mac-base change to set the wifi MACs. It's not clear if
upstream would want it once mac-base is upstreamed.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/17064
Signed-off-by: Robert Marko <robimarko@gmail.com>