net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions

This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.

Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/irda/sir_dev.c b/drivers/net/irda/sir_dev.c
index fd0796c..bde004f 100644
--- a/drivers/net/irda/sir_dev.c
+++ b/drivers/net/irda/sir_dev.c
@@ -621,7 +621,7 @@
 			 */
 
 			dev_kfree_skb_any(skb);
-			return 0;
+			return NETDEV_TX_OK;
 		} else
 			dev->new_speed = speed;
 	}
@@ -668,7 +668,7 @@
 	}
 	spin_unlock_irqrestore(&dev->tx_lock, flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /* called from network layer with rtnl hold */