Adding explicit routing API to AudioTrack

Change-Id: I40c048c7644c46f4e4f7103875206c0785c4b1dc
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImplLegacy.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImplLegacy.cpp
index 5a91192..372a9fa 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImplLegacy.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImplLegacy.cpp
@@ -569,6 +569,7 @@
                                               audio_format_t format,
                                               audio_channel_mask_t channelMask,
                                               audio_output_flags_t flags,
+                                              int selectedDeviceId __unused,
                                               const audio_offload_info_t *offloadInfo)
 {
     if (attr != NULL) {