crypto: af_alg - fix af_alg memory_allocated data type

Change data type to fix warning:

crypto/af_alg.c:35: warning: initialization from incompatible pointer type
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/af_alg.c

@@ -27,7 +27,7 @@ struct alg_type_list {
 	struct list_head list;
 };
 
-static atomic_t alg_memory_allocated;
+static atomic_long_t alg_memory_allocated;
 
 static struct proto alg_proto = {
 	.name			= "ALG",