Updating Platform Security String to 2018-09-05 Bug: 111501777 am: 6bc223c9af am: 57c2d9f670
am: e3cb7c3a73

Change-Id: I9671925bba18cd0f1148b48483b28563dbe00d0d
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 72af38f..dbdaf7d 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -256,7 +256,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2018-08-05
+      PLATFORM_SECURITY_PATCH := 2018-09-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH