Update tuner default AIDL HAL.

*) Use tuner AIDL HAL return values.
*) Replace mTunerService with mTuner to avoid confusing.
*) Merge other HIDL HAL changes.
   *) ag/15371813, ag/15371814 and ag/15371815.

Bug: 191825295
Test: make and run VtsHalTvTunerTargetTest
Change-Id: Ibbf94c4fc36c3bda94a7e0f3e0697c83ac414d0e
diff --git a/tv/tuner/aidl/default/Frontend.h b/tv/tuner/aidl/default/Frontend.h
index f89e74d..3c602cf 100644
--- a/tv/tuner/aidl/default/Frontend.h
+++ b/tv/tuner/aidl/default/Frontend.h
@@ -59,7 +59,7 @@
     virtual ~Frontend();
     bool supportsSatellite();
     std::shared_ptr<IFrontendCallback> mCallback;
-    std::shared_ptr<Tuner> mTunerService;
+    std::shared_ptr<Tuner> mTuner;
     FrontendType mType = FrontendType::UNDEFINED;
     int32_t mId = 0;
     bool mIsLocked = false;