Add com.android.settings to white list

Bug: 24256521
Change-Id: If315b082960190b3ebea387484f5a00e707ef558
diff --git a/data/etc/platform.xml b/data/etc/platform.xml
index 27c6620..ab37519 100644
--- a/data/etc/platform.xml
+++ b/data/etc/platform.xml
@@ -143,7 +143,9 @@
          access while in power save mode, even if they aren't in the foreground. -->
     <allow-in-power-save-except-idle package="com.android.providers.downloads" />
 
+    <!-- These are the packages that are white-listed to be able to run as system user -->
+    <system-user-whitelisted-app package="com.android.settings" />
+
     <!-- These are the packages that shouldn't run as system user -->
     <system-user-blacklisted-app package="com.android.wallpaper.livepicker" />
-    <system-user-blacklisted-app package="com.android.settings" />
 </permissions>