sm8450-common: overlay: Enable double tap to wake support

Change-Id: Idd9c5110de22e315afc6b73d000f584e1bdc0848

overlay/FrameworksResXiaomi/res/values/config.xml

@@ -407,4 +407,7 @@
          Refer to power.h for details.
     -->
     <bool name="config_powerDecoupleInteractiveModeFromDisplay">true</bool>
+
+    <!-- Whether device supports double tap to wake -->
+    <bool name="config_supportDoubleTapWake">true</bool>
 </resources>