Good news, everyone!
I'm happy to announce that we integrated support for the Wolfson and Cirrus Logic cards into LibreELEC. Starting with today's 8.0.1 release these cards will work with official builds.
If you've been using my 8.0.0 build just do a manual update to the official 8.0.1 version. This is going to be a seamless update, all your configuration settings will be preserved.
If you are new to this and do a fresh install with 8.0.1 don't forget to enable the card in config.txt via