isci: Restore the ATAPI device RNC management code.

The ATAPI specific and STP general RNC suspension code had been
incorrectly removed from the remote device code.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 415d5f5..6c530e4 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -2118,6 +2118,9 @@
 		 * completion.
 		 */
 		if (ireq->stp.rsp.fis_type == FIS_REGD2H) {
+			sci_remote_device_suspend(ireq->target_device,
+						  SCI_SW_SUSPEND_NORMAL);
+
 			ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE;
 			ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID;
 			sci_change_state(&ireq->sm, SCI_REQ_COMPLETED);