net/dccp/ccid.c: add __init to ccid_activate

ccid_activate is only called by __init ccid_initialize_builtins in same module.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dccp/ccid.c

@@ -99,7 +99,7 @@ static void ccid_kmem_cache_destroy(struct kmem_cache *slab)
 		kmem_cache_destroy(slab);
 }
 
-static int ccid_activate(struct ccid_operations *ccid_ops)
+static int __init ccid_activate(struct ccid_operations *ccid_ops)
 {
 	int err = -ENOBUFS;