Remove stream assignment from the IPU3 pipeline handler generateConfiguration() implementation. The function aims to provide a suitable default for the requested use cases. Defer stream assignment to validation and only initialize sizes and formats. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>