Use the libcamera core helper DelayedControls instead of the local StaggeredCtrl. The new helper is modeled after the StaggeredCtrl implementation and behaves the same. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>