scsi: qla4xxx: Fix kernel-doc formatting and misnaming issue

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/qla4xxx/ql4_mbx.c:47: warning: wrong kernel-doc identifier on line:
 drivers/scsi/qla4xxx/ql4_mbx.c:947: warning: expecting prototype for qla4xxx_set_fwddb_entry(). Prototype was for qla4xxx_set_ddb_entry() instead

Link: https://lore.kernel.org/r/20210303144631.3175331-20-lee.jones@linaro.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Manish Rangankar <mrangankar@marvell.com>
Cc: GR-QLogic-Storage-Upstream@marvell.com
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Acked-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla4xxx/ql4_mbx.c

@@ -44,7 +44,7 @@ void qla4xxx_process_mbox_intr(struct scsi_qla_host *ha, int out_count)
 }
 
 /**
- * qla4xxx_is_intr_poll_mode – Are we allowed to poll for interrupts?
+ * qla4xxx_is_intr_poll_mode - Are we allowed to poll for interrupts?
  * @ha: Pointer to host adapter structure.
  * returns: 1=polling mode, 0=non-polling mode
  **/
@@ -933,7 +933,7 @@ int qla4xxx_conn_open(struct scsi_qla_host *ha, uint16_t fw_ddb_index)
 }
 
 /**
- * qla4xxx_set_fwddb_entry - sets a ddb entry.
+ * qla4xxx_set_ddb_entry - sets a ddb entry.
  * @ha: Pointer to host adapter structure.
  * @fw_ddb_index: Firmware's device database index
  * @fw_ddb_entry_dma: dma address of ddb entry