rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/configs/purple.h b/include/configs/purple.h
index 59743df..5cc4fc7 100644
--- a/include/configs/purple.h
+++ b/include/configs/purple.h
@@ -146,8 +146,8 @@
 #define	CONFIG_ENV_IS_IN_FLASH	1
 
 /* Address and size of Primary Environment Sector	*/
-#define CFG_ENV_ADDR		0xB0008000
-#define CFG_ENV_SIZE		0x4000
+#define CONFIG_ENV_ADDR		0xB0008000
+#define CONFIG_ENV_SIZE		0x4000
 
 #define CONFIG_FLASH_32BIT
 #define CONFIG_NR_DRAM_BANKS	1