Make the remote submix audio module available.

Bug: 10265163
Change-Id: Id9fb42c76e3528aeefe8bbeeb323af73fc1a9d60
diff --git a/audio_policy.conf b/audio_policy.conf
index 650e6ec..4bef965 100644
--- a/audio_policy.conf
+++ b/audio_policy.conf
@@ -5,7 +5,7 @@
 global_configuration {
   attached_output_devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER
   default_output_device AUDIO_DEVICE_OUT_SPEAKER
-  attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_BACK_MIC
+  attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_BACK_MIC|AUDIO_DEVICE_IN_REMOTE_SUBMIX
 }
 
 # audio hardware module section: contains descriptors for all audio hw modules present on the