Add CHANGE_DEVICE_IDLE_TEMP_WHITELIST

Add CHANGE_DEVICE_IDLE_TEMP_WHITELIST to GmsCore's
privapp-permissions-com.google.android.gms.xml, required starting from commit
6002388 of GmsCore.
Thanks to cha0sh3r0 and dp-alvarez.
diff --git a/GmsCore/privapp-permissions-com.google.android.gms.xml b/GmsCore/privapp-permissions-com.google.android.gms.xml
index f6845d1..466ecf9 100644
--- a/GmsCore/privapp-permissions-com.google.android.gms.xml
+++ b/GmsCore/privapp-permissions-com.google.android.gms.xml
@@ -3,5 +3,6 @@
     <privapp-permissions package="com.google.android.gms">
         <permission name="android.permission.FAKE_PACKAGE_SIGNATURE"/>
         <permission name="android.permission.INSTALL_LOCATION_PROVIDER"/>
+        <permission name="android.permission.CHANGE_DEVICE_IDLE_TEMP_WHITELIST"/>
     </privapp-permissions>
 </permissions>