Add Dual Channel into Bluetooth Audio Channel Mode developer options menu

        <item>0</item>

        <item>1</item>

        <item>2</item>

        <item>3</item>

    </string-array>

    <!-- Summaries for Bluetooth Audio Codec Channel Mode selection preference. [CHAR LIMIT=50]-->

<?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.

*/

-->

<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">

    <!-- Titles for Bluetooth Audio Codec Channel Mode selection preference. [CHAR LIMIT=50] -->

    <string-array name="lineage_bluetooth_a2dp_codec_channel_mode_titles">

        <item>Use System Selection (Default)</item>

        <item>Mono</item>

        <item>Stereo</item>

        <item>Dual Channel</item>

    </string-array>

    <!-- Summaries for Bluetooth Audio Codec Channel Mode selection preference. [CHAR LIMIT=50]-->

    <string-array name="lineage_bluetooth_a2dp_codec_channel_mode_summaries" >

        <item>Use System Selection (Default)</item>

        <item>Mono</item>

        <item>Stereo</item>

        <item>Dual Channel</item>

    </string-array>

</resources>