SUNRPC: make cache_detail structures const

Make these const as they are only getting passed to the function
cache_create_net having the argument as const.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index f81eaa8..740b67d 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -569,7 +569,7 @@ static int unix_gid_show(struct seq_file *m,
 	return 0;
 }
 
-static struct cache_detail unix_gid_cache_template = {
+static const struct cache_detail unix_gid_cache_template = {
 	.owner		= THIS_MODULE,
 	.hash_size	= GID_HASHMAX,
 	.name		= "auth.unix.gid",
@@ -862,7 +862,7 @@ struct auth_ops svcauth_unix = {
 	.set_client	= svcauth_unix_set_client,
 };
 
-static struct cache_detail ip_map_cache_template = {
+static const struct cache_detail ip_map_cache_template = {
 	.owner		= THIS_MODULE,
 	.hash_size	= IP_HASHMAX,
 	.name		= "auth.unix.ip",