rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/impa7.h b/include/configs/impa7.h
index 7eb6921..52eb888 100644
--- a/include/configs/impa7.h
+++ b/include/configs/impa7.h
@@ -41,7 +41,7 @@
 /*
  * Size of malloc() pool
  */
-#define CFG_MALLOC_LEN		(CFG_ENV_SIZE + 128*1024)
+#define CFG_MALLOC_LEN		(CONFIG_ENV_SIZE + 128*1024)
 #define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */
 
 /*
@@ -152,8 +152,8 @@
 #define CFG_FLASH_WRITE_TOUT	(2*CFG_HZ) /* Timeout for Flash Write */
 
 #define	CONFIG_ENV_IS_IN_FLASH	1
-#define CFG_ENV_ADDR		(PHYS_FLASH_1 + 0x1C000)	/* Addr of Environment Sector	*/
-#define CFG_ENV_SIZE		0x4000	/* Total Size of Environment Sector	*/
+#define CONFIG_ENV_ADDR		(PHYS_FLASH_1 + 0x1C000)	/* Addr of Environment Sector	*/
+#define CONFIG_ENV_SIZE		0x4000	/* Total Size of Environment Sector	*/
 
 /*
  * JFFS2 partitions