sm8450-common: overlay: Increase refresh rate brightness thresholds

Make some headroom for panels with worse gamma calibration.

Change-Id: Ic599727e98881933c2e101765130d085d1543743

overlay/FrameworksResXiaomi/res/values/config.xml

@@ -60,14 +60,14 @@
 
     <!-- Low zone brightness thresholds in the range [0, 255] -->
     <integer-array name="config_brightnessThresholdsOfPeakRefreshRate" translatable="false">
-        <item>3</item>
-        <item>4</item>
+        <item>7</item>
+        <item>11</item>
     </integer-array>
 
     <!-- Low zone lux thresholds -->
     <integer-array name="config_ambientThresholdsOfPeakRefreshRate" translatable="false">
         <item>-1</item>
-        <item>5</item>
+        <item>15</item>
     </integer-array>
 
     <!-- Default refresh rate in the zone defined by brightness and ambient thresholds.