netdev: convert pseudo-devices to netdev_tx_t

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 2001cb1..0bcecbf 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3381,7 +3381,7 @@
 static void pktgen_xmit(struct pktgen_dev *pkt_dev)
 {
 	struct net_device *odev = pkt_dev->odev;
-	int (*xmit)(struct sk_buff *, struct net_device *)
+	netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
 		= odev->netdev_ops->ndo_start_xmit;
 	struct netdev_queue *txq;
 	u16 queue_map;