Updating security string to 2016-09-01 to platform and CTS in preparation for 2016 September OTA am: 4d7c3a4c0d am: 5e9c40c879 am: d46066851f am: c8b3df9fb8
am: 46a86bf9d5

Change-Id: If879ae7d694caa588554628a4fff3558009aa694
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 9d1e6e0..5b2dc6d 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -73,7 +73,7 @@
   # Can be an arbitrary string, but must be a single word.
   #
   # If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-  PLATFORM_SECURITY_PATCH := 2016-08-05
+  PLATFORM_SECURITY_PATCH := 2016-09-01
 endif
 
 ifeq "" "$(PLATFORM_BASE_OS)"