isci: Convert of sci_ssp_response_iu to ssp_response_iu

Converting to Linux native format. However the isci driver does a lot of
the calculation based on the max size of this data structure and the
Linux data structure only has a pointer to the response data. Thus the
sizeof(struct ssp_response_iu) will be incorrect and we need to define
the max size.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/sas.h b/drivers/scsi/isci/sas.h
index 21ddd63..1a1e9bc 100644
--- a/drivers/scsi/isci/sas.h
+++ b/drivers/scsi/isci/sas.h
@@ -69,6 +69,9 @@
 #define FIS_PIO_SETUP       0x5F
 #define FIS_DATA            0x46
 
+/**************************************************************************/
+#define SSP_RESP_IU_MAX_SIZE	280
+
 /*
  * contents of the SSP COMMAND INFORMATION UNIT.
  * For specific information on each of these individual fields please