net: korina: use GRO

Performance gain when receiving locally is 55->95Mbps and 50->65Mbps for NAT.
Signed-off-by: NRoman Yeryomin <roman@advem.lv>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/korina.c

@@ -406,7 +406,7 @@ static int korina_rx(struct net_device *dev, int limit)
 		skb->protocol = eth_type_trans(skb, dev);
 
 		/* Pass the packet to upper layers */
-		netif_receive_skb(skb);
+		napi_gro_receive(&lp->napi, skb);
 		dev->stats.rx_packets++;
 		dev->stats.rx_bytes += pkt_len;