block: Rename blk_queue_max_sectors to blk_queue_max_hw_sectors

The block layer calling convention is blk_queue_<limit name>.
blk_queue_max_sectors predates this practice, leading to some confusion.
Rename the function to appropriately reflect that its intended use is to
set max_hw_sectors.

Also introduce a temporary wrapper for backwards compability.  This can
be removed after the merge window is closed.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 9e52d16..032f0d0 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3674,7 +3674,7 @@
 		if (ipr_is_vset_device(res)) {
 			blk_queue_rq_timeout(sdev->request_queue,
 					     IPR_VSET_RW_TIMEOUT);
-			blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
+			blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
 		}
 		if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
 			sdev->allow_restart = 1;