Backport of "v4l2object: Add support for YVU420M format" into 1.22
requested to merge tpm/gstreamer:backport-mr-4287-into-1.22-v4l2object-add-support-for-YVU420M-format into 1.22
Backport of !4287 (merged) "v4l2object: Add support for YVU420M format".
Commits:
- 8cf21fe7 v4l2object: Add support for YVU420M format