scsi: zfcp: silence remaining kdoc warnings in header files

Improve whatever the following simple invocation reported:
$ ./scripts/kernel-doc -none drivers/s390/scsi/*.h

While at it, improve some related kdoc,
including struct zfcp_fsf_ct_els in zfcp_fsf.h.

Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/s390/scsi/zfcp_dbf.h

@@ -42,7 +42,8 @@ struct zfcp_dbf_rec_trigger {
  * @fsf_req_id: request id for fsf requests
  * @rec_status: status of the fsf request
  * @rec_step: current step of the recovery action
- * rec_count: recovery counter
+ * @rec_action: ERP action type
+ * @rec_count: recoveries including retries for particular @rec_action
  */
 struct zfcp_dbf_rec_running {
 	u64 fsf_req_id;
@@ -72,6 +73,7 @@ enum zfcp_dbf_rec_id {
  * @adapter_status: current status of the adapter
  * @port_status: current status of the port
  * @lun_status: current status of the lun
+ * @u: record type specific data
  * @u.trig: structure zfcp_dbf_rec_trigger
  * @u.run: structure zfcp_dbf_rec_running
  */
@@ -126,6 +128,8 @@ struct zfcp_dbf_san {
  * @prot_status_qual: protocol status qualifier
  * @fsf_status: fsf status
  * @fsf_status_qual: fsf status qualifier
+ * @port_handle: handle for port
+ * @lun_handle: handle for LUN
  */
 struct zfcp_dbf_hba_res {
 	u64 req_issued;
@@ -158,6 +162,7 @@ struct zfcp_dbf_hba_uss {
  * @ZFCP_DBF_HBA_RES: response trace record
  * @ZFCP_DBF_HBA_USS: unsolicited status trace record
  * @ZFCP_DBF_HBA_BIT: bit error trace record
+ * @ZFCP_DBF_HBA_BASIC: basic adapter event, only trace tag, no other data
  */
 enum zfcp_dbf_hba_id {
 	ZFCP_DBF_HBA_RES	= 1,
@@ -176,6 +181,9 @@ enum zfcp_dbf_hba_id {
  * @fsf_seq_no: fsf sequence number
  * @pl_len: length of payload stored as zfcp_dbf_pay
  * @u: record type specific data
+ * @u.res: data for fsf responses
+ * @u.uss: data for unsolicited status buffer
+ * @u.be:  data for bit error unsolicited status buffer
  */
 struct zfcp_dbf_hba {
 	u8 id;