freebsd: unset zombie flag on ifnet_arrival_event
freebsd: unset zombie flag on ifnet_arrival_event

ifnet_departure_event leaves the interface in a zombie state. This
patch unsets the zombie flag on ifnet_arrival_event.

luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap