The NV24 pixelFormatInfo table entry defines an incorrect horizontal
sub-sampling.
Update to the correct value.
Fixes: 29c5508075 ("v4l2: camera_proxy: Create format info array")
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>