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/msm8960/platform.c b/hal/msm8960/platform.c
index f9b7851..50dba2d 100644
--- a/hal/msm8960/platform.c
+++ b/hal/msm8960/platform.c
@@ -1160,3 +1160,9 @@
 {
     return -ENOSYS;
 }
+
+int platform_set_spkr_device_tz_names(snd_device_t index,
+                                      const char *spkr_1_tz_name, const char *spkr_2_tz_name)
+{
+    return -ENOSYS;
+}