set 60Hz refresh rate as default am: 6a5f8ebaa2

Original change: https://googleplex-android-review.googlesource.com/c/device/google/lynx/+/20649393

Change-Id: I812b875a32feb507b05429044969f832f4d34ff6
Signed-off-by: Automerger Merge Worker <[email protected]>

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

@@ -171,7 +171,7 @@
     <integer name="config_defaultRefreshRate">0</integer>
 
     <!-- The default peak refresh rate. -->
-    <integer name="config_defaultPeakRefreshRate">90</integer>
+    <integer name="config_defaultPeakRefreshRate">60</integer>
 
     <!-- the number of the max cached processes in the system. -->
     <integer name="config_customizedMaxCachedProcesses">64</integer>