Implement ProgramSelector at HIDL layer.

No front-end implementation yet.

Bug: b/32621193
Test: VTS
Change-Id: I48f034e709254836cad35bbeb4285c3c42a9e1cd
diff --git a/broadcastradio/1.1/ITuner.hal b/broadcastradio/1.1/ITuner.hal
index 7511629..912786a 100644
--- a/broadcastradio/1.1/ITuner.hal
+++ b/broadcastradio/1.1/ITuner.hal
@@ -21,6 +21,27 @@
 interface ITuner extends @1.0::ITuner {
 
     /**
+     * Tune to a specified program.
+     *
+     * For AM/FM, it must be called when a valid configuration has been applied.
+     * Automatically cancels pending scan, step or tune.
+     *
+     * If method returns OK, ITunerCallback.tuneComplete_1_1() MUST be called:
+     * - once successfully tuned;
+     * - after a time out;
+     * - after a full band scan, if no station found.
+     *
+     * The tuned field of ProgramInfo should indicate if tuned to a valid
+     * station or not.
+     *
+     * @param program Program to tune to.
+     * @return result OK if successfully started tunning.
+     *                INVALID_ARGUMENTS if invalid arguments are passed.
+     *                NOT_INITIALIZED if another error occurs.
+     */
+    tune_1_1(ProgramSelector program) generates (Result result);
+
+    /**
      * Retrieve current station information.
      * @return result OK if scan successfully started
      *                NOT_INITIALIZED if another error occurs