Added CarService Privileged permissions to xml files

Bug: 177455922
Test: m
Change-Id: I146906c5b8365014829c2a2b0580ba084ac01be0
diff --git a/data/etc/com.google.android.car.garagemode.testapp.xml b/data/etc/com.google.android.car.garagemode.testapp.xml
new file mode 100644
index 0000000..05be698
--- /dev/null
+++ b/data/etc/com.google.android.car.garagemode.testapp.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 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
+  -->
+<permissions>
+    <privapp-permissions package="com.google.android.car.garagemode.testapp">
+        <permission name="android.car.permission.CAR_DRIVING_STATE"/>
+    </privapp-permissions>
+</permissions>