Merge "Document return value of AServiceManager_openDeclaredPassthroughHal" into main am: ddf0e82e3a am: 16fa610cae

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2969432

Change-Id: I8292653d83aca466988146a653b4e9d4746a79a6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/libs/binder/ndk/include_platform/android/binder_manager.h b/libs/binder/ndk/include_platform/android/binder_manager.h
index b34b30d..a905dff 100644
--- a/libs/binder/ndk/include_platform/android/binder_manager.h
+++ b/libs/binder/ndk/include_platform/android/binder_manager.h
@@ -248,6 +248,8 @@
  * \param instance identifier of the passthrough service (e.g. "mapper")
  * \param instance identifier of the implemenatation (e.g. "default")
  * \param flag passed to dlopen()
+ *
+ * \return the result of dlopen of the specified HAL
  */
 void* AServiceManager_openDeclaredPassthroughHal(const char* interface, const char* instance,
                                                  int flag)