Buildroot needs to update Kodi first. They just released version 2019.11 but the Kodi revision is still the same (17.6). Buildroot has a release build every quarter so hopefully in the next build.
I am also awaiting the update as 4K video doesn't want to play properly on the Odroid-H2 with Kodi 17.6. If anyone happens to have a fix for this issue, it would be much appreciated.