hal: pass voice volumes to ext speaker driver

Bug: 17203285
Change-Id: I1b9bdc3a49fa162ac85b7b1c1b8de027a20983d2
diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 9908b81..c5a4e88 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -2249,6 +2249,8 @@
     int ret;
     struct audio_device *adev = (struct audio_device *)dev;
 
+    audio_extn_extspk_set_voice_vol(adev->extspk, volume);
+
     pthread_mutex_lock(&adev->lock);
     ret = voice_set_volume(adev, volume);
     pthread_mutex_unlock(&adev->lock);