quick hack for unknown item in audio_policy.conf

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|AUDIO_DEVICE_IN_REMOTE_SUBMIX
  speaker_drc_enabled TRUE
}
better have it return success
recognise AUDIO_DEVICE_OUT_PROXY
recognise AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD , AUDIO_OUTPUT_FLAG_NON_BLOCKING
recognise AUDIO_CHANNEL_IN_FRONT_BACK
use speaker as default device
remove asserts