net: sun: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles

dev_consume_skb_irq() should be called when skb xmit done. It makes
drop profiles(dropwatch, perf) more friendly.
Signed-off-by: Yang Wei <yang.wei9@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sun/cassini.c

@@ -1898,7 +1898,7 @@ static inline void cas_tx_ringN(struct cas *cp, int ring, int limit)
 		cp->net_stats[ring].tx_packets++;
 		cp->net_stats[ring].tx_bytes += skb->len;
 		spin_unlock(&cp->stat_lock[ring]);
-		dev_kfree_skb_irq(skb);
+		dev_consume_skb_irq(skb);
 	}
 	cp->tx_old[ring] = entry;
 

drivers/net/ethernet/sun/sunbmac.c

@@ -781,7 +781,7 @@ static void bigmac_tx(struct bigmac *bp)
 
 		DTX(("skb(%p) ", skb));
 		bp->tx_skbs[elem] = NULL;
-		dev_kfree_skb_irq(skb);
+		dev_consume_skb_irq(skb);
 
 		elem = NEXT_TX(elem);
 	}

drivers/net/ethernet/sun/sunhme.c

@@ -1962,7 +1962,7 @@ static void happy_meal_tx(struct happy_meal *hp)
 			this = &txbase[elem];
 		}
 
-		dev_kfree_skb_irq(skb);
+		dev_consume_skb_irq(skb);
 		dev->stats.tx_packets++;
 	}
 	hp->tx_old = elem;