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/airo.c b/drivers/net/wireless/airo.c
index c150c48..7116a1a 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -1920,7 +1920,9 @@
 	return 0;
 }
 
-static int mpi_start_xmit(struct sk_buff *skb, struct net_device *dev) {
+static netdev_tx_t mpi_start_xmit(struct sk_buff *skb,
+					struct net_device *dev)
+{
 	int npacks, pending;
 	unsigned long flags;
 	struct airo_info *ai = dev->ml_priv;
@@ -2119,7 +2121,9 @@
 	dev_kfree_skb(skb);
 }
 
-static int airo_start_xmit(struct sk_buff *skb, struct net_device *dev) {
+static netdev_tx_t airo_start_xmit(struct sk_buff *skb,
+					 struct net_device *dev)
+{
 	s16 len;
 	int i, j;
 	struct airo_info *priv = dev->ml_priv;
@@ -2184,7 +2188,9 @@
 	dev_kfree_skb(skb);
 }
 
-static int airo_start_xmit11(struct sk_buff *skb, struct net_device *dev) {
+static netdev_tx_t airo_start_xmit11(struct sk_buff *skb,
+					   struct net_device *dev)
+{
 	s16 len;
 	int i, j;
 	struct airo_info *priv = dev->ml_priv;