Implement default radio HAL stopProgramListUpdates

Implemented stopProgramListUpdates method in default AIDL broadcast
radio HAL. Created a separate thread for program list updates, so
that canceling pending tuning operations and canceling pending
program list updates are independent.

Bug: 243681584
Test: atest VtsHalBroadcastradioAidlTargetTest
Change-Id: I9e09f267a2264fa0cbc280d0d6ea71037db519ac
diff --git a/broadcastradio/aidl/default/BroadcastRadio.h b/broadcastradio/aidl/default/BroadcastRadio.h
index 092776f..0f818ce 100644
--- a/broadcastradio/aidl/default/BroadcastRadio.h
+++ b/broadcastradio/aidl/default/BroadcastRadio.h
@@ -68,7 +68,9 @@
     const VirtualRadio& mVirtualRadio;
     std::mutex mMutex;
     AmFmRegionConfig mAmFmConfig GUARDED_BY(mMutex);
-    std::unique_ptr<::android::WorkerThread> mThread GUARDED_BY(mMutex) =
+    std::unique_ptr<::android::WorkerThread> mTuningThread GUARDED_BY(mMutex) =
+            std::unique_ptr<::android::WorkerThread>(new ::android::WorkerThread());
+    std::unique_ptr<::android::WorkerThread> mProgramListThread GUARDED_BY(mMutex) =
             std::unique_ptr<::android::WorkerThread>(new ::android::WorkerThread());
     bool mIsTuneCompleted GUARDED_BY(mMutex) = true;
     Properties mProperties GUARDED_BY(mMutex);
@@ -81,6 +83,7 @@
     std::optional<AmFmBandRange> getAmFmRangeLocked() const;
     void cancelLocked();
     ProgramInfo tuneInternalLocked(const ProgramSelector& sel);
+    void cancelProgramListUpdateLocked();
 
     binder_status_t cmdHelp(int fd) const;
     binder_status_t cmdTune(int fd, const char** args, uint32_t numArgs);