libata-scsi: minor cleanup for ata_scsi_zbc_out_xlat

The reset_all variable name is misleading as this bit is also applicable to
open, close, and finish actions. So rename that variable to "all" and remove
the unnecessary mask operation that's already done earlier.

Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
[hch: split from the previous patch]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>