[Feature Request] Dolby Vision Profile 7 + fel support on android tv

Before filing a feature request:

• Search existing open issues, specifically with the label ‘enhancement’:
  https://github.com/androidx/media/labels/enhancement
• For ExoPlayer-related feature requests, please also check for existing feature
  requests on the ExoPlayer tracker:
  https://github.com/google/ExoPlayer/labels/enhancement
• Search existing pull requests:
  • On this tracker: https://github.com/androidx/media/pulls,
  • On the ExoPlayer tracker: https://github.com/google/ExoPlayer/pulls

When filing a feature request:

Replace the content in the sections below.

[REQUIRED] Use case description

Describe the use case or problem you are trying to solve in detail. If there are
any standards or specifications involved, please provide the relevant details.

Proposed solution

A clear and concise description of your proposed solution, if you have one.

In coreelec they add dovi.ko to android box and the box can play dolby vision profile 7 + fel (full enhancement layer ) movie.

Alternatives considered

A clear and concise description of any alternative solutions you considered,
if applicable.

Add option in the player to convert dolby vision profile 7 to profile 8 etc.