Standardize command usage messages with cmd_usage()

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/common/cmd_mfsl.c b/common/cmd_mfsl.c
index c2442ee..db2a994 100644
--- a/common/cmd_mfsl.c
+++ b/common/cmd_mfsl.c
@@ -38,7 +38,7 @@
 	unsigned int blocking;
 
 	if (argc < 2) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -46,7 +46,7 @@
 	blocking = (unsigned int)simple_strtoul (argv[2], NULL, 16);
 	if (fslnum < 0 || fslnum >= XILINX_FSL_NUMBER) {
 		puts ("Bad number of FSL\n");
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -196,7 +196,7 @@
 	unsigned int blocking;
 
 	if (argc < 3) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -204,7 +204,7 @@
 	num = (unsigned int)simple_strtoul (argv[2], NULL, 16);
 	blocking = (unsigned int)simple_strtoul (argv[3], NULL, 16);
 	if (fslnum < 0 || fslnum >= XILINX_FSL_NUMBER) {
-		printf ("Bad number of FSL\nUsage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 
@@ -354,7 +354,7 @@
 	unsigned int val = 0;
 
 	if (argc < 2) {
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}
 	reg = (unsigned int)simple_strtoul (argv[1], NULL, 16);