net: via-velocity: replace dev_kfree_skb_irq by dev_consume_skb_irq for drop profiles

dev_consume_skb_irq() should be called in velocity_free_tx_buf()
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/via/via-velocity.c

@@ -1740,7 +1740,7 @@ static void velocity_free_tx_buf(struct velocity_info *vptr,
 		dma_unmap_single(vptr->dev, tdinfo->skb_dma[i],
 				 le16_to_cpu(pktlen), DMA_TO_DEVICE);
 	}
-	dev_kfree_skb_irq(skb);
+	dev_consume_skb_irq(skb);
 	tdinfo->skb = NULL;
 }