enc28j60: use netif_rx_ni() to deliver RX packets

The enc28j60 driver reads incoming packets in the process (workqueue) context,
not in a tasklet or the interrupt context. Thus, we should use netif_rx_ni()
to deliver those packets to the networking layer, instead of netif_rx(). This
way incoming packets don't wait in the incoming queue for the next IRQ to be
serviced.

Signed-off-by: Baruch Siach <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/enc28j60.c

···
 			ndev->stats.rx_packets++;
 			ndev->stats.rx_bytes += len;
 			ndev->last_rx = jiffies;
-			netif_rx(skb);
+			netif_rx_ni(skb);
 		}
 	}
 	/*