Hey Jock, thanks for your work on this.
I have an RK3328 H96 Max+ with a BCM4334/AP6334 wifi chip (device id 02d0:4334). Your Armbian image supports the wifi chip but LibreELEC doesn't, although LE will boot, run Kodi, connect to HDMI CEC, etc without issue. How much did you have to do to add support?