[SCSI] Unify SAM_ and SAM_STAT_ macros

We have two separate definitions for identical constants with nearly the
same name.  One comes from the generic headers in scsi.h; the other is
an enum in libsas.h ... it's causing confusion about which one is
correct (fortunately they both are).

Fix this by eliminating the libsas.h duplicate

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 8c496b5..042153c 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -71,7 +71,7 @@
 		case SAS_SG_ERR:
 			return AC_ERR_INVALID;
 
-		case SAM_CHECK_COND:
+		case SAM_STAT_CHECK_CONDITION:
 		case SAS_OPEN_TO:
 		case SAS_OPEN_REJECT:
 			SAS_DPRINTK("%s: Saw error %d.  What to do?\n",
@@ -107,7 +107,7 @@
 	sas_ha = dev->port->ha;
 
 	spin_lock_irqsave(dev->sata_dev.ap->lock, flags);
-	if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_GOOD) {
+	if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD) {
 		ata_tf_from_fis(resp->ending_fis, &dev->sata_dev.tf);
 		qc->err_mask |= ac_err_mask(dev->sata_dev.tf.command);
 		dev->sata_dev.sstatus = resp->sstatus;
@@ -511,12 +511,12 @@
 					goto ex_err;
 			}
 		}
-		if (task->task_status.stat == SAM_BUSY ||
-			   task->task_status.stat == SAM_TASK_SET_FULL ||
+		if (task->task_status.stat == SAM_STAT_BUSY ||
+			   task->task_status.stat == SAM_STAT_TASK_SET_FULL ||
 			   task->task_status.stat == SAS_QUEUE_FULL) {
 			SAS_DPRINTK("task: q busy, sleeping...\n");
 			schedule_timeout_interruptible(HZ);
-		} else if (task->task_status.stat == SAM_CHECK_COND) {
+		} else if (task->task_status.stat == SAM_STAT_CHECK_CONDITION) {
 			struct scsi_sense_hdr shdr;
 
 			if (!scsi_normalize_sense(ts->buf, ts->buf_valid_size,
@@ -549,7 +549,7 @@
 					    shdr.asc, shdr.ascq);
 			}
 		} else if (task->task_status.resp != SAS_TASK_COMPLETE ||
-			   task->task_status.stat != SAM_GOOD) {
+			   task->task_status.stat != SAM_STAT_GOOD) {
 			SAS_DPRINTK("task finished with resp:0x%x, "
 				    "stat:0x%x\n",
 				    task->task_status.resp,