Standardize command usage messages with cmd_usage()

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/tools/updater/cmd_flash.c b/tools/updater/cmd_flash.c
index 5ff7336..5ce45ba 100644
--- a/tools/updater/cmd_flash.c
+++ b/tools/updater/cmd_flash.c
@@ -122,7 +122,7 @@
 	int rcode = 0;
 
 	if (argc < 2) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -147,7 +147,7 @@
 	}
 
 	if (argc != 3) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -168,7 +168,7 @@
 	addr_last  = simple_strtoul(argv[2], NULL, 16);
 
 	if (addr_first >= addr_last) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -244,7 +244,7 @@
 	int rcode = 0;
 
 	if (argc < 3) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -253,7 +253,7 @@
 	else if (strcmp(argv[1], "on") == 0)
 		p = 1;
 	else {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -310,7 +310,7 @@
 	}
 
 	if (argc != 4) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -350,7 +350,7 @@
 	addr_last  = simple_strtoul(argv[3], NULL, 16);
 
 	if (addr_first >= addr_last) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 	rcode = flash_sect_protect (p, addr_first, addr_last);