net: seeq: fix return type of ndo_start_xmit function

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.

Found by coccinelle.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/seeq/sgiseeq.c

@@ -578,7 +578,8 @@ static inline int sgiseeq_reset(struct net_device *dev)
 	return 0;
 }
 
-static int sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t
+sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct sgiseeq_private *sp = netdev_priv(dev);
 	struct hpc3_ethregs *hregs = sp->hregs;