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/net/atm/lec.c b/net/atm/lec.c
index ff2e594..c463868 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -289,7 +289,7 @@
 		skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
 		kfree_skb(skb);
 		if (skb2 == NULL)
-			return 0;
+			return NETDEV_TX_OK;
 		skb = skb2;
 	}
 	skb_push(skb, 2);
@@ -307,7 +307,7 @@
 		skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
 		kfree_skb(skb);
 		if (skb2 == NULL)
-			return 0;
+			return NETDEV_TX_OK;
 		skb = skb2;
 	}
 #endif
@@ -345,7 +345,7 @@
 			dev_kfree_skb(skb);
 			if (skb2 == NULL) {
 				dev->stats.tx_dropped++;
-				return 0;
+				return NETDEV_TX_OK;
 			}
 			skb = skb2;
 		}
@@ -416,7 +416,7 @@
 	if (entry)
 		lec_arp_put(entry);
 	dev->trans_start = jiffies;
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /* The inverse routine to net_open(). */