block: fix uapi blkzoned.h comments

Update the kdoc comments for struct blk_zone (capacity field description
missing) and for struct blk_zone_report (flags field description
missing).
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

include/uapi/linux/blkzoned.h

@@ -93,12 +93,15 @@ enum blk_zone_report_flags {
  * @non_seq: Flag indicating that the zone is using non-sequential resources
  *           (for host-aware zoned block devices only).
  * @reset: Flag indicating that a zone reset is recommended.
- * @reserved: Padding to 64 B to match the ZBC/ZAC defined zone descriptor size.
+ * @resv: Padding for 8B alignment.
+ * @capacity: Zone usable capacity in 512 B sector units
+ * @reserved: Padding to 64 B to match the ZBC, ZAC and ZNS defined zone
+ *            descriptor size.
  *
- * start, len and wp use the regular 512 B sector unit, regardless of the
- * device logical block size. The overall structure size is 64 B to match the
- * ZBC/ZAC defined zone descriptor and allow support for future additional
- * zone information.
+ * start, len, capacity and wp use the regular 512 B sector unit, regardless
+ * of the device logical block size. The overall structure size is 64 B to
+ * match the ZBC, ZAC and ZNS defined zone descriptor and allow support for
+ * future additional zone information.
  */
 struct blk_zone {
 	__u64	start;		/* Zone start sector */
@@ -118,7 +121,7 @@ struct blk_zone {
  *
  * @sector: starting sector of report
  * @nr_zones: IN maximum / OUT actual
- * @reserved: padding to 16 byte alignment
+ * @flags: one or more flags as defined by enum blk_zone_report_flags.
  * @zones: Space to hold @nr_zones @zones entries on reply.
  *
  * The array of at most @nr_zones must follow this structure in memory.