If nvmem is used for ethernet mac address, we need to defer loading to
get the proper mac.
Move to probe as ndo_init is the wrong place to handle EPROBE_DEFER.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/21920
Signed-off-by: Robert Marko <robimarko@gmail.com>