NB: Until the audio channel mapping issues are figured out users can select the "HDMI" device as a pass-through device but should still select the "Analogue" output device as the main Kodi output. The Analogue PCM device alsa conf has some channel remapping to workaround the problem - the HDMI device does not support this.
I checked your latest image for Odroid C2. And it loads with the default file dtb.
There was also a sound when playing a video.
Found problem - HEVC files have no picture.
Thanks for your work chewitt.