deinterlace: Add NV12_10LE40 format for sink caps
For decoders that support output NV12_10LE40 format, output format is still NV12 when playback 10bit streams.
This is caused by deinterlace plugin.
We can see deinterlace sink templates like below. There is no NV12_10LE40 format at the first DEINTERLACE_CAPS. Need to add it to let v4l2 decoder can select it decoder support 10bit format.