Add support to simple-dmabuf-v4l for NV12 devices that don't use MPLANE.
There are V4L2 devices that will output NV12 but will do so using one dma buffer, and not using the MPLANE API. To support this, we need to add the same dma buffer twice but with a different offset for the chrominance plane.
Fixes #712 (closed) Signed-off-by: Bram Stolk (b.stolk@gmail.com)
Edited by Bram Stolk