Pass sink metadata to Bluetooth

When just microphone is enabled, i.e. for recording audio, we will
receive just sink metadata update.

Bug: 150670922
Change-Id: I795385d19e64ec5c6bc0a8549beda52da27d25a1
diff --git a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h b/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h
index 3d4f0cc..ac3aece 100644
--- a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h
+++ b/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h
@@ -40,7 +40,7 @@
   bool isValid(const V2_1::SessionType& sessionType) override;
   bool isValid(const V2_0::SessionType& sessionType) override;
 
-  Return<void> startSession(const sp<IBluetoothAudioPort>& hostIf,
+  Return<void> startSession(const sp<V2_0::IBluetoothAudioPort>& hostIf,
                             const V2_0::AudioConfiguration& audioConfig,
                             startSession_cb _hidl_cb) override;