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/vlsi_ir.c b/drivers/net/irda/vlsi_ir.c
index ac0e4b6..08e26f1 100644
--- a/drivers/net/irda/vlsi_ir.c
+++ b/drivers/net/irda/vlsi_ir.c
@@ -915,7 +915,7 @@
 			 */
 		spin_unlock_irqrestore(&idev->lock, flags);
 		dev_kfree_skb_any(skb);
-		return 0;
+		return NETDEV_TX_OK;
 	}
 
 	/* sanity checks - simply drop the packet */
@@ -1044,7 +1044,7 @@
 	}
 	spin_unlock_irqrestore(&idev->lock, flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 
 drop_unlock:
 	spin_unlock_irqrestore(&idev->lock, flags);
@@ -1058,7 +1058,7 @@
 	 * packet for later retry of transmission - which isn't exactly
 	 * what we want after we've just called dev_kfree_skb_any ;-)
 	 */
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 static void vlsi_tx_interrupt(struct net_device *ndev)