net: mark net_proto_ops as const

All usages of structure net_proto_ops should be declared const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index 98e0538..a202e5b 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -431,7 +431,7 @@
 	sock_put(rds_rs_to_sk(rs));
 }
 
-static struct net_proto_family rds_family_ops = {
+static const struct net_proto_family rds_family_ops = {
 	.family =	AF_RDS,
 	.create =	rds_create,
 	.owner	=	THIS_MODULE,