pasemi_mac: Disable interface on close

Turns out we never disable the interface. It doesn't really cause
any problems since the channel is off, but it's still better to do it
this way.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/pasemi_mac.c

@@ -1287,6 +1287,7 @@ static int pasemi_mac_close(struct net_device *dev)
 	pasemi_mac_pause_txchan(mac);
 	pasemi_mac_pause_rxint(mac);
 	pasemi_mac_pause_rxchan(mac);
+	pasemi_mac_intf_disable(mac);
 
 	free_irq(mac->tx->chan.irq, mac->tx);
 	free_irq(mac->rx->chan.irq, mac->rx);