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/port.h b/drivers/scsi/isci/port.h
index b9bc89b..9a9be7b 100644
--- a/drivers/scsi/isci/port.h
+++ b/drivers/scsi/isci/port.h
@@ -115,7 +115,7 @@
 	u32 assigned_device_count;
 	u32 not_ready_reason;
 	struct isci_phy *phy_table[SCI_MAX_PHYS];
-	struct scic_sds_controller *owning_controller;
+	struct isci_host *owning_controller;
 	struct sci_timer timer;
 	struct scu_port_task_scheduler_registers __iomem *port_task_scheduler_registers;
 	/* XXX rework: only one register, no need to replicate per-port */
@@ -243,7 +243,7 @@
 void scic_sds_port_construct(
 	struct isci_port *iport,
 	u8 port_index,
-	struct scic_sds_controller *scic);
+	struct isci_host *ihost);
 
 enum sci_status scic_sds_port_initialize(
 	struct isci_port *iport,