net: replace uses of __constant_{endian}

Base versions handle constant folding now.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/arcnet/arc-rawmode.c

@@ -122,7 +122,7 @@ static void rx(struct net_device *dev, int bufnum,
 
 	BUGLVL(D_SKB) arcnet_dump_skb(dev, skb, "rx");
 
-	skb->protocol = __constant_htons(ETH_P_ARCNET);
+	skb->protocol = cpu_to_be16(ETH_P_ARCNET);
 ;
 	netif_rx(skb);
 }