Add icon for new IA.

Add preference icon for System updates, Account sync, and App
permissions.

Bug: 33759208
Test: Visual
Change-Id: Icb0aff0e9c46d774d643b4b4262c6d3f939c791a

res/xml/app_and_notification.xml

@@ -23,6 +23,7 @@
     <Preference
         android:key="manage_perms"
         android:title="@string/app_permissions"
+        android:icon="@drawable/ic_apps"
         android:order="-130"
         settings:keywords="@string/keywords_app_permissions">
         <intent android:action="android.intent.action.MANAGE_PERMISSIONS"/>