overlay/frameworks/base/core/res/res/xml/storage_list.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
**
** Copyright 2011, 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.
*/
-->

<!-- See storage config details at http://source.android.com/tech/storage/ -->

<StorageList xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- internal emulated storage -->
    <storage
        android:storageDescription="@string/storage_internal"
        android:emulated="true"
        android:mtpReserve="100" />
</StorageList>