rename CFG_ENV_IS_NOWHERE in CONFIG_ENV_IS_NOWHERE

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/grsim.h b/include/configs/grsim.h
index f880a7b..c6d3666 100644
--- a/include/configs/grsim.h
+++ b/include/configs/grsim.h
@@ -209,7 +209,7 @@
 /*
  * Environment settings
  */
-#define CFG_ENV_IS_NOWHERE 1
+#define CONFIG_ENV_IS_NOWHERE 1
 /*#define CFG_ENV_IS_IN_FLASH	0*/
 /*#define CFG_ENV_SIZE		0x8000*/
 #define CFG_ENV_SECT_SIZE	0x40000