Standardize command usage messages with cmd_usage()

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c
index 066fd80..8aae9fc 100644
--- a/common/cmd_scsi.c
+++ b/common/cmd_scsi.c
@@ -229,7 +229,7 @@
 		boot_device = argv[2];
 		break;
 	default:
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -346,7 +346,7 @@
 {
 	switch (argc) {
     case 0:
-    case 1:	printf ("Usage:\n%s\n", cmdtp->usage);	return 1;
+    case 1:	cmd_usage(cmdtp);	return 1;
     case 2:
 			if (strncmp(argv[1],"res",3) == 0) {
 				printf("\nReset SCSI\n");
@@ -392,7 +392,7 @@
 					printf("\nno SCSI devices available\n");
 				return 1;
 			}
-			printf ("Usage:\n%s\n", cmdtp->usage);
+			cmd_usage(cmdtp);
 			return 1;
 	case 3:
 			if (strncmp(argv[1],"dev",3) == 0) {
@@ -421,7 +421,7 @@
 				}
 				return 1;
 			}
-			printf ("Usage:\n%s\n", cmdtp->usage);
+			cmd_usage(cmdtp);
 			return 1;
     default:
 			/* at least 4 args */
@@ -437,7 +437,7 @@
 				return 0;
 			}
 	} /* switch */
-	printf ("Usage:\n%s\n", cmdtp->usage);
+	cmd_usage(cmdtp);
 	return 1;
 }