hal: use mono speaker for pahu codec variants

Set is_stereo_spkr flag to false for pahu audio codec
variants in msmnile target.

Change-Id: I39018bd9253e5621eea674c95c5fea43c8774054
diff --git a/hal/msm8974/hw_info.c b/hal/msm8974/hw_info.c
index 667338e..4d13af4 100644
--- a/hal/msm8974/hw_info.c
+++ b/hal/msm8974/hw_info.c
@@ -437,6 +437,9 @@
         hw_info->num_snd_devices = ARRAY_SIZE(pahu_qrd_variant_devices);
         hw_info->is_stereo_spkr = false;
         strlcpy(hw_info->dev_extn, "-qrd", sizeof(hw_info->dev_extn));
+    } else if (strstr(snd_card_name, "pahu")) {
+        strlcpy(hw_info->name, "msmnile", sizeof(hw_info->name));
+        hw_info->is_stereo_spkr = false;
     } else {
         ALOGW("%s: Not a msmnile device", __func__);
     }