wireless: convert drivers to netdev_tx_t

Mostly just simple conversions:
  * ray_cs had bogus return of NET_TX_LOCKED but driver
    was not using NETIF_F_LLTX
  * hostap and ipw2x00 had some code that returned value
    from a called function that also had to change to return netdev_tx_t

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/orinoco/main.c b/drivers/net/wireless/orinoco/main.c
index 2c7dc65..7a32bcb 100644
--- a/drivers/net/wireless/orinoco/main.c
+++ b/drivers/net/wireless/orinoco/main.c
@@ -337,7 +337,7 @@
 /* Tx path                                                          */
 /********************************************************************/
 
-static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct orinoco_private *priv = ndev_priv(dev);
 	struct net_device_stats *stats = &priv->stats;