Standardize command usage messages with cmd_usage()

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/common/cmd_sata.c b/common/cmd_sata.c
index c6e0d37..3380768 100644
--- a/common/cmd_sata.c
+++ b/common/cmd_sata.c
@@ -77,7 +77,7 @@
 	switch (argc) {
 	case 0:
 	case 1:
-		printf("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	case 2:
 		if (strncmp(argv[1],"inf", 3) == 0) {
@@ -115,7 +115,7 @@
 			}
 			return rc;
 		}
-		printf("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	case 3:
 		if (strncmp(argv[1], "dev", 3) == 0) {
@@ -147,7 +147,7 @@
 			}
 			return rc;
 		}
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 
 	default: /* at least 4 args */
@@ -184,7 +184,7 @@
 				n, (n == cnt) ? "OK" : "ERROR");
 			return (n == cnt) ? 0 : 1;
 		} else {
-			printf("Usage:\n%s\n", cmdtp->usage);
+			cmd_usage(cmdtp);
 			rc = 1;
 		}