net: replace dma_sync_single with dma_sync_single_for_cpu

This replaces dma_sync_single() with dma_sync_single_for_cpu() because
dma_sync_single() is an obsolete API; include/linux/dma-mapping.h says:

/* Backwards compat, remove in 2.7.x */
#define dma_sync_single		dma_sync_single_for_cpu
#define dma_sync_sg		dma_sync_sg_for_cpu

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wan/ixp4xx_hss.c b/drivers/net/wan/ixp4xx_hss.c
index 765a7f5..08b1a28 100644
--- a/drivers/net/wan/ixp4xx_hss.c
+++ b/drivers/net/wan/ixp4xx_hss.c
@@ -731,8 +731,8 @@
 		dma_unmap_single(&dev->dev, desc->data,
 				 RX_SIZE, DMA_FROM_DEVICE);
 #else
-		dma_sync_single(&dev->dev, desc->data,
-				RX_SIZE, DMA_FROM_DEVICE);
+		dma_sync_single_for_cpu(&dev->dev, desc->data,
+					RX_SIZE, DMA_FROM_DEVICE);
 		memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n],
 			      ALIGN(desc->pkt_len, 4) / 4);
 #endif