net: Convert uses of __constant_<foo> to <foo>

The use of __constant_<foo> has been unnecessary for quite awhile now.

Make these uses consistent with the rest of the kernel.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index b1b0c8d..587f9fb 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3495,11 +3495,11 @@
 static bool skb_pfmemalloc_protocol(struct sk_buff *skb)
 {
 	switch (skb->protocol) {
-	case __constant_htons(ETH_P_ARP):
-	case __constant_htons(ETH_P_IP):
-	case __constant_htons(ETH_P_IPV6):
-	case __constant_htons(ETH_P_8021Q):
-	case __constant_htons(ETH_P_8021AD):
+	case htons(ETH_P_ARP):
+	case htons(ETH_P_IP):
+	case htons(ETH_P_IPV6):
+	case htons(ETH_P_8021Q):
+	case htons(ETH_P_8021AD):
 		return true;
 	default:
 		return false;