Add documentation for the new device attribute file ncq_prio_supported,
and its SAS HBA equivalent sas_ncq_prio_supported.
Signed-off-by: NDamien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: NHannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210816014456.2191776-12-damien.lemoal@wdc.comSigned-off-by: NJens Axboe <axboe@kernel.dk>