366dad2536
In preparation for adding new functions and overrides to the V4L2M2MDevice class, add an override specifier to all overridden functions in the class. This prevents -Winconsistent-missing-override warnings. Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>