isci: unify isci_host and scic_sds_controller

Remove the distinction between these two implementations and unify on
isci_host (local instances named ihost).  Hmmm, we had two
'oem_parameters' instances, one was unused... nice.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
index ca64ea2..0cafcea 100644
--- a/drivers/scsi/isci/request.h
+++ b/drivers/scsi/isci/request.h
@@ -145,7 +145,7 @@
 	 */
 	struct completion *io_request_completion;
 	struct sci_base_state_machine sm;
-	struct scic_sds_controller *owning_controller;
+	struct isci_host *owning_controller;
 	struct isci_remote_device *target_device;
 	u16 io_tag;
 	enum sci_request_protocol protocol;
@@ -500,7 +500,7 @@
 void isci_terminate_pending_requests(struct isci_host *ihost,
 				     struct isci_remote_device *idev);
 enum sci_status
-scic_task_request_construct(struct scic_sds_controller *scic,
+scic_task_request_construct(struct isci_host *ihost,
 			    struct isci_remote_device *idev,
 			    u16 io_tag,
 			    struct isci_request *ireq);