Add a '--orientation|-o' option to the Python version of the cam test application to set an orientation to the image stream. Supported values are: - rot0: no rotation - rot180: rotate 180 degrees - flip: vertical flip - mirror: horizontal flip Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>