media: rkisp1: Add NV16M and NV61M to output formats

Add support for NV16M and NV61M as output formats. As NV16, NV61, NV12M
and NV21M are already supported, the infrastructure is already in place
to support NV16M and NV61M, so it is sufficient to simply add relevant
entries to the list of output formats.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>