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/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 95bc49d..81795ea 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -383,7 +383,7 @@
 }
 
 static struct packet_type phonet_packet_type = {
-	.type = __constant_htons(ETH_P_PHONET),
+	.type = cpu_to_be16(ETH_P_PHONET),
 	.dev = NULL,
 	.func = phonet_rcv,
 };