[privilege]Set HDMI audio in mirror mode.
#include <audio/audio_manager_device.h>
int audio_manager_set_hdmi_mirror_mode(bool mirror_mode)
True, if the HDMI is to be put in mirror mode; false, otherwise.
The audio_manager_set_hdmi_mirror_mode() function puts the HDMI audio in mirror mode, which routes audio automatically to the HDMI.
EOK upon success, negative errno upon failure.