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/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h
index 170fbd6..7b5c402 100644
--- a/include/configs/MPC8641HPCN.h
+++ b/include/configs/MPC8641HPCN.h
@@ -504,7 +504,7 @@
  * Environment
  */
 #ifndef CFG_RAMBOOT
-    #define CFG_ENV_IS_IN_FLASH	1
+    #define CONFIG_ENV_IS_IN_FLASH	1
     #define CFG_ENV_ADDR		(CFG_MONITOR_BASE + 0x60000)
     #define CFG_ENV_SECT_SIZE		0x10000	/* 64K(one sector) for env */
     #define CFG_ENV_SIZE		0x2000