Adapt blkdev_nr_zones and blk_queue_zone_no function so that it canReviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
also work for non-power-of-2 zone sizes.
As the existing deployments of zoned devices had power-of-2
assumption, power-of-2 optimized calculation is kept for those devices.
There are no direct hot paths modified and the changes just
introduce one new branch per call.