omni: Add separate Ring and Notification volume SimpleDeviceConfig overlay

Change-Id: I190cf8d187e5ad7f4748b8c7b3eb29e0baaa4bb0
diff --git a/overlay/common/packages/apps/SimpleDeviceConfig/res/values/config.xml b/overlay/common/packages/apps/SimpleDeviceConfig/res/values/config.xml
index a63ea48..84ea65a 100644
--- a/overlay/common/packages/apps/SimpleDeviceConfig/res/values/config.xml
+++ b/overlay/common/packages/apps/SimpleDeviceConfig/res/values/config.xml
@@ -20,5 +20,8 @@
         <!-- Enable the new and advanced Privacy Hub -->
         <item>privacy/safety_center_is_enabled=true</item>
 
+        <!-- Separate Ring and Notification volume -->
+        <item>systemui/volume_separate_notification=true</item>
+
     </string-array>
 </resources>