audio_dev_add_info
audio_dev_add_info(ac->d, buf);
audio_dev_add_info(statep->adev, buf);
audio_dev_add_info(dev->adev, "Legacy codec: Asahi Kasei AK4531");
void audio_dev_add_info(audio_dev_t *, const char *);
audio_dev_add_info(adev, "Legacy codec: Crystal Semiconductor CS4231");