staging: wlan-ng: fix p80211knetdev_hard_start_xmit()'s return type

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, but the implementation in this
driver returns an 'int'.

Fix this by returning 'netdev_tx_t' in this driver too.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wlan-ng/p80211netdev.c

@@ -95,7 +95,7 @@
 static int p80211knetdev_init(struct net_device *netdev);
 static int p80211knetdev_open(struct net_device *netdev);
 static int p80211knetdev_stop(struct net_device *netdev);
-static int p80211knetdev_hard_start_xmit(struct sk_buff *skb,
+static netdev_tx_t p80211knetdev_hard_start_xmit(struct sk_buff *skb,
 					 struct net_device *netdev);
 static void p80211knetdev_set_multicast_list(struct net_device *dev);
 static int p80211knetdev_do_ioctl(struct net_device *dev, struct ifreq *ifr,
@@ -321,7 +321,7 @@ static void p80211netdev_rx_bh(unsigned long arg)
  *	zero on success, non-zero on failure.
  *----------------------------------------------------------------
  */
-static int p80211knetdev_hard_start_xmit(struct sk_buff *skb,
+static netdev_tx_t p80211knetdev_hard_start_xmit(struct sk_buff *skb,
 					 struct net_device *netdev)
 {
 	int result = 0;