scsi: ufs: bsg: Fix all kernel-doc warnings

In struct utp_upiu_query_v4_0, add description for @osf3 and mark the
@reserved field as private so that no description is needed for it.

In struct utp_upiu_cmd, use the correct struct member name to eliminate a
kernel-doc warning.

Signed-off-by: Randy Dunlap <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Cc: James E.J. Bottomley <[e-mail]>
Cc: Martin K. Petersen <[e-mail]>
Cc: Alim Akhtar <[e-mail]>
Cc: Avri Altman <[e-mail]>
Cc: Bart Van Assche <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

include/uapi/scsi/scsi_bsg_ufs.h

···
  * @idn: a value that indicates the particular type of data B-1
  * @index: Index to further identify data B-2
  * @selector: Index to further identify data B-3
+ * @osf3: spec field B-4
  * @osf4: spec field B-5
  * @osf5: spec field B 6,7
  * @osf6: spec field DW 8,9
···
 	__be16 osf5;
 	__be32 osf6;
 	__be32 osf7;
+	/* private: */
 	__be32 reserved;
 };
 
 /**
  * struct utp_upiu_cmd - Command UPIU structure
- * @data_transfer_len: Data Transfer Length DW-3
+ * @exp_data_transfer_len: Data Transfer Length DW-3
  * @cdb: Command Descriptor Block CDB DW-4 to DW-7
  */
 struct utp_upiu_cmd {