ll_temac: enable transmit and receive time stamping.

This patch enables software (and phy device) time stamping. Since this MAC
is based on phylib, adding the hooks makes hardware time stamping in the
phy possible.

Compile tested only.

Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ll_temac_main.c

@@ -728,6 +728,8 @@ static int temac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	if (lp->tx_bd_tail >= TX_BD_NUM)
 		lp->tx_bd_tail = 0;
 
+	skb_tx_timestamp(skb);
+
 	/* Kick off the transfer */
 	lp->dma_out(lp, TX_TAILDESC_PTR, tail_p); /* DMA start */
 
@@ -773,7 +775,8 @@ static void ll_temac_recv(struct net_device *ndev)
 			skb->ip_summed = CHECKSUM_COMPLETE;
 		}
 
-		netif_rx(skb);
+		if (!skb_defer_rx_timestamp(skb))
+			netif_rx(skb);
 
 		ndev->stats.rx_packets++;
 		ndev->stats.rx_bytes += length;