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/IPHASE4539.h b/include/configs/IPHASE4539.h
index 7d564a0..cea8532 100644
--- a/include/configs/IPHASE4539.h
+++ b/include/configs/IPHASE4539.h
@@ -208,7 +208,7 @@
 #define CFG_FLASH_WRITE_TOUT	500	/* Flash Write Timeout (in ms)	*/
 
 /* Environment in FLASH, there is little space left in Serial EEPROM */
-#define CFG_ENV_IS_IN_FLASH	1
+#define CONFIG_ENV_IS_IN_FLASH	1
 #define CFG_ENV_SECT_SIZE	0x10000 /* We use one complete sector	*/
 #define CFG_ENV_ADDR		(CFG_FLASH_BASE + 0x10000) /* 2. sector */