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/zd1201.c b/drivers/net/wireless/zd1201.c
index dae1bfb..bc81974 100644
--- a/drivers/net/wireless/zd1201.c
+++ b/drivers/net/wireless/zd1201.c
@@ -779,7 +779,8 @@
 				(llc+snap+type+payload)
 		zd		1 null byte, zd1201 packet type
  */
-static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t zd1201_hard_start_xmit(struct sk_buff *skb,
+						struct net_device *dev)
 {
 	struct zd1201 *zd = netdev_priv(dev);
 	unsigned char *txbuf = zd->txdata;