rename CFG_ENV macros to CONFIG_ENV

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/iphase4539/flash.c b/board/iphase4539/flash.c
index f8ab51a..098dcc2 100644
--- a/board/iphase4539/flash.c
+++ b/board/iphase4539/flash.c
@@ -78,8 +78,8 @@
 #ifdef CONFIG_ENV_IS_IN_FLASH
 		/* ENV protection ON by default */
 		flash_protect(FLAG_PROTECT_SET,
-			      CFG_ENV_ADDR,
-			      CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+			      CONFIG_ENV_ADDR,
+			      CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
 			      flash_info + bank);
 #endif