Backport of "v4l2codecs: decoders: Add DMA_DRM caps support" into 1.24
Backport of !5890 (merged) "v4l2codecs: decoders: Add DMA_DRM caps support".
Commits:
- 65896dab v4l2codecs: decoders: Use src template for negotiation filter
- 73b69d8c v4l2codecs: decoder: Generalize size enumeration caps
- a95acbcc v4l2codecs: decoder: Clean up select_src_format()
- 513d0d8c v4l2codecs: decoders: Introduce and use set_output_state helper class
- 5189e8b9 v4l2codecs: decoders: Add DMA_DRM caps support