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>
diff --git a/net/can/af_can.c b/net/can/af_can.c
index fa417ca..d90e8dd 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -828,7 +828,7 @@
  */
 
 static struct packet_type can_packet __read_mostly = {
-	.type = __constant_htons(ETH_P_CAN),
+	.type = cpu_to_be16(ETH_P_CAN),
 	.dev  = NULL,
 	.func = can_rcv,
 };