[SCSI] libsas: Convert sas_proto users to sas_protocol

sparse complains about the mixing of enums in libsas.  Since the
underlying numeric values of both enums are the same, combine them
to get rid of the warning.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index 5f3a0d7..31b9af2 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -98,7 +98,7 @@
 			dev->dev_type = SATA_PM;
 		else
 			dev->dev_type = SATA_DEV;
-		dev->tproto = SATA_PROTO;
+		dev->tproto = SAS_PROTOCOL_SATA;
 	} else {
 		struct sas_identify_frame *id =
 			(struct sas_identify_frame *) dev->frame_rcvd;