Add background scan routines and callbacks to broadcast radio HAL.

Bug: b/34054813
Test: existing VTS pass, none added.
Change-Id: I2009e73a9e5edc4752366fd84f67b5a745856441
diff --git a/broadcastradio/1.1/IBroadcastRadio.hal b/broadcastradio/1.1/IBroadcastRadio.hal
new file mode 100644
index 0000000..a6347c7
--- /dev/null
+++ b/broadcastradio/1.1/IBroadcastRadio.hal
@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+package android.hardware.broadcastradio@1.1;
+
+import @1.0::IBroadcastRadio;
+
+interface IBroadcastRadio extends @1.0::IBroadcastRadio {
+
+    /*
+     * Retrieve implementation properties.
+     * @return properties A Properties structure containing implementation
+     *                    description and capabilities.
+     */
+    getProperties_1_1() generates (Properties properties);
+
+};