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

Change-Id: I8ed61f72717a185b342a5a728e8111ad6dd606df
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index e57b198..fcf41c9 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -249,7 +249,7 @@
     #  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