NdkMediaExtractor: add disconnect API

Bug: 63934228
Change-Id: I89c57fae387958d204df9c736e89654868ee5941
diff --git a/media/ndk/NdkMediaExtractor.cpp b/media/ndk/NdkMediaExtractor.cpp
index ac837a3..b5e60a4 100644
--- a/media/ndk/NdkMediaExtractor.cpp
+++ b/media/ndk/NdkMediaExtractor.cpp
@@ -475,5 +475,11 @@
     return AMEDIA_OK;
 }
 
+EXPORT
+media_status_t AMediaExtractor_disconnect(AMediaExtractor * ex) {
+    ex->mImpl->disconnect();
+    return AMEDIA_OK;
+}
+
 } // extern "C"