Settings: Add missing icon for media output

Change-Id: Id4ac89dba079ab46dcb7d97cca7b2c4c8f9fb612
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

res/drawable/ic_media_output.xml

@@ -0,0 +1,32 @@
+<!--
+  Copyright (C) 2020 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
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24"
+        android:viewportHeight="24"
+        android:tint="?android:attr/colorControlNormal">
+    <path
+        android:pathData="M18.2,1L9.8,1C8.81,1 8,1.81 8,2.8v14.4c0,0.99 0.81,1.79 1.8,1.79l8.4,0.01c0.99,0 1.8,-0.81 1.8,-1.8L20,2.8c0,-0.99 -0.81,-1.8 -1.8,-1.8zM14,3c1.1,0 2,0.89 2,2s-0.9,2 -2,2 -2,-0.89 -2,-2 0.9,-2 2,-2zM14,16.5c-2.21,0 -4,-1.79 -4,-4s1.79,-4 4,-4 4,1.79 4,4 -1.79,4 -4,4z"
+        android:fillColor="#000000"/>
+    <path
+        android:pathData="M14,12.5m-2.5,0a2.5,2.5 0,1 1,5 0a2.5,2.5 0,1 1,-5 0"
+        android:fillColor="#000000"/>
+    <path
+        android:pathData="M6,5H4v16c0,1.1 0.89,2 2,2h10v-2H6V5z"
+        android:fillColor="#000000"/>
+</vector>

res/xml/sound_settings.xml

@@ -42,6 +42,7 @@
     <!-- Media output switcher -->
     <Preference
         android:key="media_output"
+        android:icon="@drawable/ic_media_output"
         android:title="@string/media_output_title"
         android:dialogTitle="@string/media_output_title"
         android:order="-175"