hal: audio: add tz_names extn to support from audio platform_info xml

To add Speaker TZ names from audio_platform_info xml, add required
support.

Change-Id: Idd31ed9e7b7235245c3dda4ccb11b47762db5ee8
diff --git a/hal/platform_api.h b/hal/platform_api.h
index 7e86174..5542a6d 100644
--- a/hal/platform_api.h
+++ b/hal/platform_api.h
@@ -115,4 +115,8 @@
 int platform_set_device_params(struct stream_out *out, int param, int value);
 int platform_set_audio_device_interface(const char * device_name, const char *intf_name,
                                         const char * codec_type);
+int platform_set_spkr_device_tz_names(snd_device_t index,
+                                       const char *spkr_1_tz_name, const char *spkr_2_tz_name);
+const char *platform_get_spkr_1_tz_name(snd_device_t snd_device);
+const char *platform_get_spkr_2_tz_name(snd_device_t snd_device);
 #endif // AUDIO_PLATFORM_API_H