net: sh_eth: fix endian check for architecture independent

SuperH has the "CONFIG_CPU_LITTLE_ENDIAN" and the "__LITTLE_ENDIAN__".
But, other architecture doesn't have them. So, this patch fixes it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/sh_eth.c

@@ -804,7 +804,7 @@ static int sh_eth_dev_init(struct net_device *ndev)
 	/* all sh_eth int mask */
 	sh_eth_write(ndev, 0, EESIPR);
 
-#if defined(__LITTLE_ENDIAN__)
+#if defined(__LITTLE_ENDIAN)
 	if (mdp->cd->hw_swap)
 		sh_eth_write(ndev, EDMR_EL, EDMR);
 	else

drivers/net/ethernet/renesas/sh_eth.h

@@ -693,7 +693,7 @@ enum TSU_FWSLC_BIT {
  */
 struct sh_eth_txdesc {
 	u32 status;		/* TD0 */
-#if defined(CONFIG_CPU_LITTLE_ENDIAN)
+#if defined(__LITTLE_ENDIAN)
 	u16 pad0;		/* TD1 */
 	u16 buffer_length;	/* TD1 */
 #else
@@ -710,7 +710,7 @@ struct sh_eth_txdesc {
  */
 struct sh_eth_rxdesc {
 	u32 status;		/* RD0 */
-#if defined(CONFIG_CPU_LITTLE_ENDIAN)
+#if defined(__LITTLE_ENDIAN)
 	u16 frame_length;	/* RD1 */
 	u16 buffer_length;	/* RD1 */
 #else