tun: Fix SIOCSIFHWADDR error.

Set proper operations.
Signed-off-by: Kusanagi Kouichi <slash@ma.neweb.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tun.c

@@ -343,7 +343,7 @@ static void tun_net_init(struct net_device *dev)
 		break;
 
 	case TUN_TAP_DEV:
-		dev->netdev_ops = &tun_netdev_ops;
+		dev->netdev_ops = &tap_netdev_ops;
 		/* Ethernet TAP Device */
 		ether_setup(dev);