Add isLnaSupported API

Bug: 239240674
Test: atest android.media.tv.tuner.cts with cf_x86_tv-userdebug
Change-Id: I94527e9ce73f5b7f13674aff34e419668ec8a425
diff --git a/services/tuner/hidl/TunerHidlService.cpp b/services/tuner/hidl/TunerHidlService.cpp
index aa03316..52005c2 100644
--- a/services/tuner/hidl/TunerHidlService.cpp
+++ b/services/tuner/hidl/TunerHidlService.cpp
@@ -302,6 +302,11 @@
     return ::ndk::ScopedAStatus::ok();
 }
 
+::ndk::ScopedAStatus TunerHidlService::isLnaSupported(bool* /* _aidl_return */) {
+    return ::ndk::ScopedAStatus::fromServiceSpecificError(
+            static_cast<int32_t>(Result::UNAVAILABLE));
+}
+
 ::ndk::ScopedAStatus TunerHidlService::setLna(bool bEnable) {
     if (mTuner == nullptr) {
         ALOGE("get ITuner failed");