Add vr platform lib

Add the vr platform library, which allows client code to load the dvr
api and access the getVrBoot() method.

Bug: 38134403
Test: Booted a Marlin.

Change-Id: I884a623ec9a297a2973f1c42c3da094c6c155630
diff --git a/vr/com.google.vr.platform.xml b/vr/com.google.vr.platform.xml
new file mode 100644
index 0000000..952b476
--- /dev/null
+++ b/vr/com.google.vr.platform.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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>
+    <library name="com.google.vr.platform"
+             file="/system/framework/com.google.vr.platform.jar" />
+</permissions>