crc32: make command optional

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/config_cmd_defaults.h b/include/config_cmd_defaults.h
index 79c0495..a55b268 100644
--- a/include/config_cmd_defaults.h
+++ b/include/config_cmd_defaults.h
@@ -1,7 +1,7 @@
 /*
  * config_cmd_defaults.h - sane defaults for everyone
  *
- * Copyright (c) 2010 Analog Devices Inc.
+ * Copyright (c) 2010-2011 Analog Devices Inc.
  *
  * Licensed under the GPL-2 or later.
  */
@@ -10,6 +10,7 @@
 #define _CONFIG_CMD_DEFAULTS_H_
 
 #define CONFIG_CMD_BOOTM 1
+#define CONFIG_CMD_CRC32 1
 #define CONFIG_CMD_EXPORTENV 1
 #define CONFIG_CMD_GO 1
 #define CONFIG_CMD_IMPORTENV 1