Fix app icon

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (c) 2018 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.

-->

<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">

    <background android:drawable="@color/colorAccent"/>

    <foreground android:drawable="@mipmap/ic_foreground"/>

</adaptive-icon>