isci: implement error isr

Add basic support for handling/reporting error interrupts.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h
index 3dc0f6c..39efd5f 100644
--- a/drivers/scsi/isci/isci.h
+++ b/drivers/scsi/isci/isci.h
@@ -115,9 +115,12 @@
 
 irqreturn_t isci_msix_isr(int vec, void *data);
 irqreturn_t isci_intx_isr(int vec, void *data);
+irqreturn_t isci_error_isr(int vec, void *data);
 
 bool scic_sds_controller_isr(struct scic_sds_controller *scic);
 void scic_sds_controller_completion_handler(struct scic_sds_controller *scic);
+bool scic_sds_controller_error_isr(struct scic_sds_controller *scic);
+void scic_sds_controller_error_handler(struct scic_sds_controller *scic);
 
 enum sci_status isci_parse_oem_parameters(
 	union scic_oem_parameters *oem_params,