Implement TunerLnb interface APIs

Test: make libtunerservice
Bug: 159067322
Change-Id: I4f54e68fede3878afff96cb4959a831d377e975f
diff --git a/services/tuner/TunerLnb.h b/services/tuner/TunerLnb.h
index 19ba3c2..e80b97e 100644
--- a/services/tuner/TunerLnb.h
+++ b/services/tuner/TunerLnb.h
@@ -44,7 +44,7 @@
     virtual ~TunerLnb();
     Status setCallback(const shared_ptr<ITunerLnbCallback>& tunerLnbCallback) override;
     Status setVoltage(int voltage) override;
-    Status setTone(int voltage) override;
+    Status setTone(int tone) override;
     Status setSatellitePosition(int position) override;
     Status sendDiseqcMessage(const vector<uint8_t>& diseqcMessage) override;
     Status close() override;