qla2xxx: Add bsg interface to support D_Port Diagnostics.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index be24e62..6ca0081 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -445,6 +445,9 @@
 extern int
 qla2x00_dump_mctp_data(scsi_qla_host_t *, dma_addr_t, uint32_t, uint32_t);
 
+extern int
+qla26xx_dport_diagnostics(scsi_qla_host_t *, void *, uint, uint);
+
 /*
  * Global Function Prototypes in qla_isr.c source file.
  */