display: fix hbm hdr at 60 hz

Bug: 229942385
Change-Id: Id20fbbb4bad5885613843a46df16db39eef350a9

panther/overlay/frameworks/base/core/res/res/values/config.xml

@@ -95,6 +95,9 @@
     <!-- default refresh rate in the high zone defined by birghtness and ambient thresholds -->
     <integer name="config_fixedRefreshRateInHighZone">60</integer>
 
+    <!-- Default refresh rate while the device has high brightness mode enabled for HDR. -->
+    <integer name="config_defaultRefreshRateInHbmHdr">60</integer>
+
     <!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.
       The N entries of this array define N  1 zones as follows:
          Zone 0:        0 <= LUX < array[0]