rename CFG_ENV_IS_IN_EEPROM in CONFIG_ENV_IS_IN_EEPROM

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/csb272.h b/include/configs/csb272.h
index 5145c00..701d3c8 100644
--- a/include/configs/csb272.h
+++ b/include/configs/csb272.h
@@ -232,7 +232,7 @@
  */
 #define CFG_ENV_IS_IN_FLASH	1	/* environment is in FLASH	*/
 #undef CFG_ENV_IS_IN_NVRAM
-#undef CFG_ENV_IS_IN_EEPROM
+#undef CONFIG_ENV_IS_IN_EEPROM
 
 /*
  * General Memory organization