rename CFG_ENV_IS_IN_FLASH in CONFIG_ENV_IS_IN_FLASH

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

include/configs/mx1fs2.h

diff --git a/include/configs/mx1fs2.h b/include/configs/mx1fs2.h
index d527d09..8f4b42c 100644
--- a/include/configs/mx1fs2.h
+++ b/include/configs/mx1fs2.h
@@ -207,7 +207,7 @@
 
 #define CFG_MONITOR_BASE	0x10000000
 #define CFG_MONITOR_LEN		0x20000		/* 128b ( 1 flash sector )   */
-#define CFG_ENV_IS_IN_FLASH	1
+#define CONFIG_ENV_IS_IN_FLASH	1
 #define CFG_ENV_ADDR		0x10020000	/* absolute address for now  */
 #define CFG_ENV_SIZE		0x20000