rename CFG_ENV_IS_IN_NVRAM in CONFIG_ENV_IS_IN_NVRAM

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/csb272.h b/include/configs/csb272.h
index 701d3c8..880bee8 100644
--- a/include/configs/csb272.h
+++ b/include/configs/csb272.h
@@ -231,7 +231,7 @@
  *
  */
 #define CFG_ENV_IS_IN_FLASH	1	/* environment is in FLASH	*/
-#undef CFG_ENV_IS_IN_NVRAM
+#undef CONFIG_ENV_IS_IN_NVRAM
 #undef CONFIG_ENV_IS_IN_EEPROM
 
 /*