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/netwave_cs.c b/drivers/net/wireless/netwave_cs.c
index 712f26e..9498b46 100644
--- a/drivers/net/wireless/netwave_cs.c
+++ b/drivers/net/wireless/netwave_cs.c
@@ -203,7 +203,8 @@
 static int netwave_close(struct net_device *dev); /* Close the device */
 
 /* Packet transmission and Packet reception */
-static int netwave_start_xmit( struct sk_buff *skb, struct net_device *dev);
+static netdev_tx_t netwave_start_xmit( struct sk_buff *skb,
+					     struct net_device *dev);
 static int netwave_rx( struct net_device *dev);
 
 /* Interrupt routines */
@@ -1026,7 +1027,8 @@
     return 0;
 }
 
-static int netwave_start_xmit(struct sk_buff *skb, struct net_device *dev) {
+static netdev_tx_t netwave_start_xmit(struct sk_buff *skb,
+					    struct net_device *dev) {
 	/* This flag indicate that the hardware can't perform a transmission.
 	 * Theoritically, NET3 check it before sending a packet to the driver,
 	 * but in fact it never do that and pool continuously.