Add applyControls() helper to apply controls for a stream. Signed-off-by: Umang Jain <umang.jain@ideasonboard.com> Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>