emac: convert to SKB paged frag API.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/emac/core.c

@@ -1458,7 +1458,7 @@ static int emac_start_xmit_sg(struct sk_buff *skb, struct net_device *ndev)
 		if (unlikely(dev->tx_cnt + mal_tx_chunks(len) >= NUM_TX_BUFF))
 			goto undo_frame;
 
-		pd = dma_map_page(&dev->ofdev->dev, frag->page, frag->page_offset, len,
+		pd = skb_frag_dma_map(&dev->ofdev->dev, frag, 0, len,
 				      DMA_TO_DEVICE);
 
 		slot = emac_xmit_split(dev, slot, pd, len, i == nr_frags - 1,