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/p3p440.h b/include/configs/p3p440.h
index ac0d83a..046ec25 100644
--- a/include/configs/p3p440.h
+++ b/include/configs/p3p440.h
@@ -295,7 +295,7 @@
 #define CFG_FLASH_EMPTY_INFO		/* print 'E' for empty sector on flinfo */
 #define CFG_FLASH_QUIET_TEST	1	/* don't warn upon unknown flash	*/
 
-#define CFG_ENV_IS_IN_FLASH     1	/* use FLASH for environment vars	*/
+#define CONFIG_ENV_IS_IN_FLASH     1	/* use FLASH for environment vars	*/
 
 #define CFG_ENV_SECT_SIZE	0x20000	/* size of one complete sector		*/
 #define CFG_ENV_ADDR		(CFG_MONITOR_BASE-CFG_ENV_SECT_SIZE)