isci: kill sci_phy_protocol and sci_request_protocol

Holdovers from the initial driver cleanup, replace with enum sas_protocol.

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 01844ef..835ede8 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -730,7 +730,7 @@
 {
 	struct sas_task *task = isci_request_access_task(ireq);
 
-	ireq->protocol = SCIC_SSP_PROTOCOL;
+	ireq->protocol = SAS_PROTOCOL_SSP;
 
 	scu_ssp_io_request_construct_task_context(ireq,
 						  task->data_dir,
@@ -763,7 +763,7 @@
 	bool copy = false;
 	struct sas_task *task = isci_request_access_task(ireq);
 
-	ireq->protocol = SCIC_STP_PROTOCOL;
+	ireq->protocol = SAS_PROTOCOL_STP;
 
 	copy = (task->data_dir == DMA_NONE) ? false : true;
 
@@ -1070,7 +1070,7 @@
 	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS):
 	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR):
 	case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR):
-		if (ireq->protocol == SCIC_STP_PROTOCOL) {
+		if (ireq->protocol == SAS_PROTOCOL_STP) {
 			ireq->scu_status = SCU_GET_COMPLETION_TL_STATUS(completion_code) >>
 					   SCU_COMPLETION_TL_STATUS_SHIFT;
 			ireq->sci_status = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED;
@@ -3169,7 +3169,7 @@
 	sci_init_sm(&ireq->sm, sci_request_state_table, SCI_REQ_INIT);
 
 	ireq->target_device = idev;
-	ireq->protocol = SCIC_NO_PROTOCOL;
+	ireq->protocol = SAS_PROTOCOL_NONE;
 	ireq->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX;
 
 	ireq->sci_status   = SCI_SUCCESS;
@@ -3310,7 +3310,7 @@
 	if (!dma_map_sg(dev, sg, 1, DMA_TO_DEVICE))
 		return SCI_FAILURE;
 
-	ireq->protocol = SCIC_SMP_PROTOCOL;
+	ireq->protocol = SAS_PROTOCOL_SMP;
 
 	/* byte swap the smp request. */