When validating a stream, and no valid packed pixel format can be found, see if an unpacked format can be used instead. This is particularly helpful for 8 (and 16) bit raw formats, where asking for a packed format would previously have failed. Now the configuration will be adjusted to give you a format (in fact, the only format) that will work. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>