[SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type

These enums have been separate since the dawn of SAS, mainly because the
latter is a procotol only enum and the former includes additional state
for libsas.  The dichotomy causes endless confusion about which one you
should use where and leads to pointless warnings like this:

drivers/scsi/mvsas/mv_sas.c: In function 'mvs_update_phyinfo':
drivers/scsi/mvsas/mv_sas.c:1162:34: warning: comparison between 'enum sas_device_type' and 'enum sas_dev_type' [-Wenum-compare]

Fix by eliminating one of them.  The one kept is effectively the sas.h
one, but call it sas_device_type and make sure the enums are all
properly namespaced with the SAS_ prefix.

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 95d04cc..69dd49c 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -1505,7 +1505,7 @@
 	pm8001_dev = pw->data; /* Most stash device structure */
 	if ((pm8001_dev == NULL)
 	 || ((pw->handler != IO_XFER_ERROR_BREAK)
-	  && (pm8001_dev->dev_type == NO_DEVICE))) {
+	  && (pm8001_dev->dev_type == SAS_PHY_UNUSED))) {
 		kfree(pw);
 		return;
 	}
@@ -3443,7 +3443,7 @@
 		sizeof(struct dev_to_host_fis));
 	phy->frame_rcvd_size = sizeof(struct dev_to_host_fis);
 	phy->identify.target_port_protocols = SAS_PROTOCOL_SATA;
-	phy->identify.device_type = SATA_DEV;
+	phy->identify.device_type = SAS_SATA_DEV;
 	pm8001_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
 	spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
 	pm8001_bytes_dmaed(pm8001_ha, phy_id);
@@ -4465,7 +4465,7 @@
 	payload.ase_sh_lm_slr_phyid = cpu_to_le32(SPINHOLD_DISABLE |
 		LINKMODE_AUTO |	LINKRATE_15 |
 		LINKRATE_30 | LINKRATE_60 | phy_id);
-	payload.sas_identify.dev_type = SAS_END_DEV;
+	payload.sas_identify.dev_type = SAS_END_DEVICE;
 	payload.sas_identify.initiator_bits = SAS_PROTOCOL_ALL;
 	memcpy(payload.sas_identify.sas_addr,
 		pm8001_ha->sas_addr, SAS_ADDR_SIZE);
@@ -4527,11 +4527,11 @@
 	if (flag == 1)
 		stp_sspsmp_sata = 0x02; /*direct attached sata */
 	else {
-		if (pm8001_dev->dev_type == SATA_DEV)
+		if (pm8001_dev->dev_type == SAS_SATA_DEV)
 			stp_sspsmp_sata = 0x00; /* stp*/
-		else if (pm8001_dev->dev_type == SAS_END_DEV ||
-			pm8001_dev->dev_type == EDGE_DEV ||
-			pm8001_dev->dev_type == FANOUT_DEV)
+		else if (pm8001_dev->dev_type == SAS_END_DEVICE ||
+			pm8001_dev->dev_type == SAS_EDGE_EXPANDER_DEVICE ||
+			pm8001_dev->dev_type == SAS_FANOUT_EXPANDER_DEVICE)
 			stp_sspsmp_sata = 0x01; /*ssp or smp*/
 	}
 	if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
@@ -4662,9 +4662,9 @@
 	PM8001_EH_DBG(pm8001_ha,
 		pm8001_printk("cmd_tag = %x, abort task tag = 0x%x",
 			cmd_tag, task_tag));
-	if (pm8001_dev->dev_type == SAS_END_DEV)
+	if (pm8001_dev->dev_type == SAS_END_DEVICE)
 		opc = OPC_INB_SSP_ABORT;
-	else if (pm8001_dev->dev_type == SATA_DEV)
+	else if (pm8001_dev->dev_type == SAS_SATA_DEV)
 		opc = OPC_INB_SATA_ABORT;
 	else
 		opc = OPC_INB_SMP_ABORT;/* SMP */