Update git submodules

* Update external/perfetto from branch 'master'
  to f52572f002a6909b7f6f19c29af5301b8cffe65c
  - Add noop rule to BUILD to import init file correctly on g3
    
    Change-Id: I32d8f228891a5189fcf8c4926f7d82d949685057
    
diff --git a/external/perfetto b/external/perfetto
index 9a43f48..f52572f 160000
--- a/external/perfetto
+++ b/external/perfetto
@@ -1 +1 @@
-Subproject commit 9a43f48ed4cd22ec0f6e1436cd88b829a3b99550
+Subproject commit f52572f002a6909b7f6f19c29af5301b8cffe65c