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/Yukon8220.h b/include/configs/Yukon8220.h
index 60f2343..9ace43e 100644
--- a/include/configs/Yukon8220.h
+++ b/include/configs/Yukon8220.h
@@ -225,13 +225,13 @@
 #define CONFIG_ENV_OVERWRITE	1
 
 #if defined CFG_ENV_IS_IN_FLASH
-#undef CFG_ENV_IS_IN_NVRAM
+#undef CONFIG_ENV_IS_IN_NVRAM
 #undef CONFIG_ENV_IS_IN_EEPROM
-#elif defined CFG_ENV_IS_IN_NVRAM
+#elif defined CONFIG_ENV_IS_IN_NVRAM
 #undef CFG_ENV_IS_IN_FLASH
 #undef CONFIG_ENV_IS_IN_EEPROM
 #elif defined CONFIG_ENV_IS_IN_EEPROM
-#undef CFG_ENV_IS_IN_NVRAM
+#undef CONFIG_ENV_IS_IN_NVRAM
 #undef CFG_ENV_IS_IN_FLASH
 #endif