Add query API for hotword streams

- Add query API for device support of hotword_tap and hw_lookback flags
- Allow AudioService to call directly into AudioPolicyManager via AIDL

Bug: 237449755
Test: atest AudioRecordTest, atest AudioManagerTest
Change-Id: I730ca36b2dd42baabd8087a51160f75ab294e27b
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 885f7c6..d7afc73 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -352,6 +352,8 @@
 
         virtual bool isUltrasoundSupported();
 
+        bool isHotwordStreamSupported(bool lookbackAudio) override;
+
         virtual status_t listAudioProductStrategies(AudioProductStrategyVector &strategies)
         {
             return mEngine->listAudioProductStrategies(strategies);