libaudiohal: Fix probing of the AIDL HAL presence

Since the AIDL HAL service is starting in parallel
with the audioserver, using `checkService` can result
in false negatives. Need to use `isDeclared` which
does the check based on the vendor manifest.

Bug: 205884982
Test: start cuttlefish with AIDL HAL enabled,
      look for `FactoryHal` tag in logcat
Change-Id: I17c4da17eb8172cdc2440070fe332b69b6d64c0e
diff --git a/media/libaudiohal/FactoryHal.cpp b/media/libaudiohal/FactoryHal.cpp
index 84ac64c..f88915d 100644
--- a/media/libaudiohal/FactoryHal.cpp
+++ b/media/libaudiohal/FactoryHal.cpp
@@ -105,12 +105,12 @@
 
 bool hasAidlHalService(const InterfaceName& interface, const AudioHalVersionInfo& version) {
     const std::string name = interface.first + "." + interface.second + "/default";
-    AIBinder* binder = AServiceManager_checkService(name.c_str());
-    if (binder == nullptr) {
-        ALOGW("%s Service %s doesn't exist", __func__, name.c_str());
+    const bool isDeclared = AServiceManager_isDeclared(name.c_str());
+    if (!isDeclared) {
+        ALOGW("%s %s: false", __func__, name.c_str());
         return false;
     }
-    ALOGI("%s AIDL Service %s exist: %s", __func__, name.c_str(), version.toString().c_str());
+    ALOGI("%s %s: true, version %s", __func__, name.c_str(), version.toString().c_str());
     return true;
 }