device_config: Keep up to 7 days of permission usage history

Keeping 7 days of discrete app op history allows us to show a 7-day
permission usage timeline in the privacy dashboard.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

overlay/common/packages/apps/SimpleDeviceConfig/res/values/config.xml

@@ -26,6 +26,9 @@
         <!-- Don't pin camera app to save memory -->
         <item>runtime_native_boot/pin_camera=false</item>
 
+        <!-- Keep up to 7 days of permission usage history -->
+        <item>privacy/discrete_history_cutoff_millis=604800000</item>
+
         <!-- Use new privacy indicators for location -->
         <item>privacy/location_indicators_enabled=true</item>
     </string-array>