Support frontend status readiness query.

The caller could use it to check whether frontend status is ready to
read or not.

Bug: 171540820
Test: atest VtsHalTvTunerTargetTest
Change-Id: I65521aacd8afe824342ad0b24f7d89006ceb5851
diff --git a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
index 0566089..c99da41 100644
--- a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
+++ b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
@@ -907,6 +907,14 @@
     mFrontendTests.maxNumberOfFrontendsTest();
 }
 
+TEST_P(TunerFrontendAidlTest, statusReadinessTest) {
+    description("Test Max Frontend status readiness");
+    if (!live.hasFrontendConnection) {
+        return;
+    }
+    mFrontendTests.statusReadinessTest(frontendMap[live.frontendId]);
+}
+
 TEST_P(TunerBroadcastAidlTest, BroadcastDataFlowVideoFilterTest) {
     description("Test Video Filter functionality in Broadcast use case.");
     if (!live.hasFrontendConnection) {