lynx: Show refresh rate stuffs

overlay-lineage/packages/apps/Settings/res/values/config.xml

@@ -17,4 +17,8 @@
 <resources>
     <!-- Whether to show Smooth Display feature in Settings Options -->
     <bool name="config_show_smooth_display">true</bool>
+
+    <!-- Whether to show min/max refresh rate in display settings -->
+    <bool name="config_show_refresh_rate_controls">true</bool>
+    <bool name="config_supports_dynamic_refresh_rate_controls">false</bool>
 </resources>