lib8390: enable transmit and receive time stamping.

This patch enables software (and phy device) time stamping. This file is
included by drivers/net/ax88796.c, which is based on phylib. So, this
patch makes hardware time stamping in the PHY possible.

Compile tested only.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/lib8390.c

@@ -410,7 +410,7 @@ static netdev_tx_t __ei_start_xmit(struct sk_buff *skb,
 
 	spin_unlock(&ei_local->page_lock);
 	enable_irq_lockdep_irqrestore(dev->irq, &flags);
-
+	skb_tx_timestamp(skb);
 	dev_kfree_skb (skb);
 	dev->stats.tx_bytes += send_length;
 
@@ -758,7 +758,8 @@ static void ei_receive(struct net_device *dev)
 				skb_put(skb, pkt_len);	/* Make room */
 				ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
 				skb->protocol=eth_type_trans(skb,dev);
-				netif_rx(skb);
+				if (!skb_defer_rx_timestamp(skb))
+					netif_rx(skb);
 				dev->stats.rx_packets++;
 				dev->stats.rx_bytes += pkt_len;
 				if (pkt_stat & ENRSR_PHY)