rename CFG_ENV_IS_IN_FLASH in CONFIG_ENV_IS_IN_FLASH

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/M54455EVB.h b/include/configs/M54455EVB.h
index 45a244f..9872d58 100644
--- a/include/configs/M54455EVB.h
+++ b/include/configs/M54455EVB.h
@@ -334,7 +334,7 @@
 #	define CONFIG_ENV_IS_IN_SPI_FLASH
 #	define CFG_ENV_SPI_CS		1
 #else
-#	define CFG_ENV_IS_IN_FLASH	1
+#	define CONFIG_ENV_IS_IN_FLASH	1
 #endif
 #undef CONFIG_ENV_OVERWRITE
 #undef CFG_ENV_IS_EMBEDDED