Firstly revert all custom HardKernel Kernel audio mods for HiFi Shield and USB DAC
The HardKernel HiFi Shield Plus works out of the box after these patches anyway.
- tweak linux.aarch64.conf
- add AML PCM 8CH patch
Then add kszaq's - enable multichannel PCM and HD Audio passthrough:
This patch enables multichannel PCM, Dolby TrueHD and DTS-HD MA audio passthrough to capable AVRs.
- remove asound.conf as it is no longer needed
- add ALSA configuration to enable multichannel PCM output
- add Kodi patch to set digital_codec parameter on audio type change
- remove Kodi workaround to identify audio output as SPDIF
- add Kodi workaround to identify audio output as HDMI and choose a proper device for passthrough
- add kernel patch to limit available sampling frequencies
