Update May-21-2018:  script may have negative impact on HDMI audio, needs further investigation.  Patches pushed to enable I2S HDMI device, but audio does not come out.   Update Feb-20-2018:  script update committed for out of the box audio support (both outputs and inputs) for ASUS Tinker Board.    Available sinks: BT-VOIP SPDIF Headset (the jack) Available sources: BT-VOIP Headset-input (the jack)   Tinkerboard sound is po