Broadcast Radio default implementation: analog forced switch.

Bug: b/36864090
Test: VTS
Change-Id: I2b7bcf2bb3ad7075f39280ab72b32bff5bf166a3
diff --git a/broadcastradio/1.1/default/Tuner.h b/broadcastradio/1.1/default/Tuner.h
index 2222e5a..3efbd09 100644
--- a/broadcastradio/1.1/default/Tuner.h
+++ b/broadcastradio/1.1/default/Tuner.h
@@ -65,6 +65,7 @@
     bool mIsTuneCompleted = false;
     ProgramSelector mCurrentProgram = {};
     ProgramInfo mCurrentProgramInfo = {};
+    std::atomic<bool> mIsAnalogForced;
 
     void tuneInternalLocked(const ProgramSelector& sel);
     bool isFmLocked();  // TODO(b/36864090): make it generic, not FM only