sc92031: Call dev_consume_skb_any instead of dev_kfree_skb.

Replace dev_kfree_skb with dev_consume_skb_any in sc92031_start_xmit
that can be called in hard irq and other contexts.

Using dev_consume_skb_any preserves the current semantics (as
dev_kfree_skb is just consume_skb) and since packet drops
are rare is usually accurate.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>

drivers/net/ethernet/silan/sc92031.c

@@ -987,7 +987,7 @@ static netdev_tx_t sc92031_start_xmit(struct sk_buff *skb,
 	spin_unlock(&priv->lock);
 
 out:
-	dev_kfree_skb(skb);
+	dev_consume_skb_any(skb);
 
 	return NETDEV_TX_OK;
 }