Change dead code in "test" cmd to debug output

Improve debug output for test by indicating the number of parameters
and quoting the parameters to make it clear exactly what each contains

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

common/cmd_test.c

@@ -33,12 +33,12 @@ int do_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	if (argc < 3)
 		return 1;
 
-#if 0
+#ifdef DEBUG
 	{
-		printf("test:");
+		debug("test(%d):", argc);
 		left = 1;
 		while (argv[left])
-			printf(" %s", argv[left++]);
+			debug(" '%s'", argv[left++]);
 	}
 #endif