Add Descrambler and Lnb Client interfaces

Test: make libmedia_tv_tuner
Bug: 174095851
Change-Id: I6140f8554b1c45a40cad7b6ba80d48402861ead4
diff --git a/media/jni/tuner/TunerClient.cpp b/media/jni/tuner/TunerClient.cpp
index 649828f..67a559c 100644
--- a/media/jni/tuner/TunerClient.cpp
+++ b/media/jni/tuner/TunerClient.cpp
@@ -171,6 +171,23 @@
     return NULL;
 }
 
+DemuxCapabilities TunerClient::getDemuxCaps() {
+    DemuxCapabilities caps;
+    return caps;
+}
+
+sp<DescramblerClient> TunerClient::openDescrambler(int /*descramblerHandle*/) {
+    return NULL;
+}
+
+sp<LnbClient> TunerClient::openLnb(int /*lnbHandle*/) {
+    return NULL;
+}
+
+sp<LnbClient> TunerClient::openLnbByName(string /*lnbName*/) {
+    return NULL;
+}
+
 /////////////// TunerClient Helper Methods ///////////////////////
 
 sp<ITuner> TunerClient::getHidlTuner() {