Backport of "audioconvert: If no channel-mask can be fixated then use a NONE channel layout" into 1.20
requested to merge tpm/gstreamer:backport-mr-2350-into-1.20-audioconvert-fallback-none-layout into 1.20
Backport of !2350 (merged) "audioconvert: If no channel-mask can be fixated then use a NONE channel layout".
Commits:
- 2eee3f4c audioconvert: If no channel-mask can be fixated then use a NONE channel layout