res/layout/system_icons.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2018 The Android Open Source 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
  -->

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/system_icons"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <com.android.systemui.statusbar.phone.StatusIconContainer
        android:id="@+id/statusIcons"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:scaleType="fitCenter"
        android:gravity="center_vertical"
        android:orientation="horizontal"
    />

    <ImageView
        android:id="@+id/settingsIcon"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_marginStart="@dimen/car_padding_2"
        android:src="@drawable/car_ic_settings_icon"
    />
</LinearLayout>