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/hp100.c b/drivers/net/hp100.c
index 1d3429a..d1b6338 100644
--- a/drivers/net/hp100.c
+++ b/drivers/net/hp100.c
@@ -1499,7 +1499,7 @@
 		goto drop;
 
 	if (lp->chip == HP100_CHIPID_SHASTA && skb_padto(skb, ETH_ZLEN))
-		return 0;
+		return NETDEV_TX_OK;
 
 	/* Get Tx ring tail pointer */
 	if (lp->txrtail->next == lp->txrhead) {
@@ -1585,7 +1585,7 @@
 	lp->stats.tx_bytes += skb->len;
 	dev->trans_start = jiffies;
 
-	return 0;
+	return NETDEV_TX_OK;
 
 drop:
 	dev_kfree_skb(skb);
@@ -1752,7 +1752,7 @@
 	printk("hp100: %s: start_xmit: end\n", dev->name);
 #endif
 
-	return 0;
+	return NETDEV_TX_OK;
 
 drop:
 	dev_kfree_skb(skb);