hal: Set echo reference from mixer file

Fix the set_echo_reference call.

Change-Id: I10609baeb0b3efce8c033be940733482fa565c71
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 923a085..64e090b 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -1445,7 +1445,7 @@
             }
         } else if (out_device & AUDIO_DEVICE_OUT_WIRED_HEADSET) {
             snd_device = SND_DEVICE_IN_VOICE_HEADSET_MIC;
-            set_echo_reference(adev->mixer, EC_REF_RX);
+            set_echo_reference(adev, true);
         } else if (out_device & AUDIO_DEVICE_OUT_ALL_SCO) {
             if (my_data->btsco_sample_rate == SAMPLE_RATE_16KHZ)
                 snd_device = SND_DEVICE_IN_BT_SCO_MIC_WB;
@@ -1467,7 +1467,7 @@
                 }
             } else {
                 snd_device = SND_DEVICE_IN_VOICE_SPEAKER_MIC;
-                set_echo_reference(adev->mixer, EC_REF_RX);
+                set_echo_reference(adev, true);
             }
         }
     } else if (source == AUDIO_SOURCE_CAMCORDER) {