DeskClock: Add sysconfig whitelist xml

Change-Id: I726064ca8112926631e77a399c5066a9a8de294e

Android.bp

@@ -27,4 +27,15 @@ android_app {
         "androidx.recyclerview_recyclerview",
         "org.lineageos.platform.internal",
     ],
+    required: [
+        "com.android.deskclock_whitelist"
+    ],
+}
+
+prebuilt_etc {
+    name: "com.android.deskclock_whitelist",
+    product_specific: true,
+    sub_dir: "sysconfig",
+    src: "com.android.deskclock_whitelist.xml",
+    filename_from_src: true,
 }

com.android.deskclock_whitelist.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2019-2020 The LineageOS Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<config>
+    <allow-in-power-save package="com.android.deskclock" />
+</config>