audio: correct app_type for VoIP case

- support flag with VOIP_TX and fast recording for
  Line and Skype

Bug: 149608192
Bug: 149605543
Test: VoIP call on hangout/skype/line

Signed-off-by: Jasmine Cha <chajasmine@google.com>
Change-Id: I30de6669f48de57edd26558ed599584139c78041
diff --git a/audio/audio_io_policy.conf b/audio/audio_io_policy.conf
index 664c671..948c0ff 100644
--- a/audio/audio_io_policy.conf
+++ b/audio/audio_io_policy.conf
@@ -107,6 +107,13 @@
     formats AUDIO_FORMAT_PCM_16_BIT
     sampling_rates 8000|16000|32000|48000
     bit_width 16
-    app_type 69947
+    app_type 69946
+  }
+  low_latency_voip_tx {
+    flags AUDIO_INPUT_FLAG_VOIP_TX|AUDIO_INPUT_FLAG_FAST
+    formats AUDIO_FORMAT_PCM_16_BIT
+    sampling_rates 48000
+    bit_width 16
+    app_type 69946
   }
 }