powerpc/numa: Fix decimal permissions

This should have been octal.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 86a63de..30a42e2 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1785,7 +1785,7 @@
 static int topology_update_init(void)
 {
 	start_topology_update();
-	proc_create("powerpc/topology_updates", 644, NULL, &topology_ops);
+	proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops);
 
 	return 0;
 }