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/dsa/tag_trailer.c b/net/dsa/tag_trailer.c
index 1c3e30c..a85c829 100644
--- a/net/dsa/tag_trailer.c
+++ b/net/dsa/tag_trailer.c
@@ -13,7 +13,7 @@
 #include <linux/netdevice.h>
 #include "dsa_priv.h"
 
-int trailer_xmit(struct sk_buff *skb, struct net_device *dev)
+netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct dsa_slave_priv *p = netdev_priv(dev);
 	struct sk_buff *nskb;