[SCSI] isci: stop interpreting ->lldd_lu_reset() as an ata soft-reset

Driving resets from libsas-eh is pre-mature as libata will make a
decision about performing a softreset.  Currently libata determines
whether to perform a softreset based on ata_eh_followup_srst_needed(),
and none of those conditions apply to isci.

Remove the srst implementation and translate ->lldd_lu_reset() for ata
devices as a request to drive a reset via libata-eh.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
index be38933..bcf2f37 100644
--- a/drivers/scsi/isci/request.h
+++ b/drivers/scsi/isci/request.h
@@ -211,10 +211,6 @@
 	SCI_REQ_STP_NON_DATA_WAIT_H2D,
 	SCI_REQ_STP_NON_DATA_WAIT_D2H,
 
-	SCI_REQ_STP_SOFT_RESET_WAIT_H2D_ASSERTED,
-	SCI_REQ_STP_SOFT_RESET_WAIT_H2D_DIAG,
-	SCI_REQ_STP_SOFT_RESET_WAIT_D2H,
-
 	/*
 	 * While in this state the IO request object is waiting for the TC
 	 * completion notification for the H2D Register FIS
@@ -446,10 +442,7 @@
 			    struct isci_remote_device *idev,
 			    u16 io_tag,
 			    struct isci_request *ireq);
-enum sci_status
-sci_task_request_construct_ssp(struct isci_request *ireq);
-enum sci_status
-sci_task_request_construct_sata(struct isci_request *ireq);
+enum sci_status sci_task_request_construct_ssp(struct isci_request *ireq);
 void sci_smp_request_copy_response(struct isci_request *ireq);
 
 static inline int isci_task_is_ncq_recovery(struct sas_task *task)