audio: hal: add hfp volume control for smart pa

add hfp volume control for smart pa

Change-Id: Idb47692799e153d404d35391ad2742dcd70fa79c
diff --git a/hal/audio_extn/hfp.c b/hal/audio_extn/hfp.c
index 2ff7e54..07d5469 100644
--- a/hal/audio_extn/hfp.c
+++ b/hal/audio_extn/hfp.c
@@ -89,6 +89,7 @@
     ALOGD("%s: (%f)\n", __func__, value);
 
     hfpmod.hfp_volume = value;
+    audio_extn_tfa_98xx_set_voice_vol(value);
 
     if (value < 0.0) {
         ALOGW("%s: (%f) Under 0.0, assuming 0.0\n", __func__, value);