rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/atmel/at91sam9rlek/nand.c b/board/atmel/at91sam9rlek/nand.c
index eb342b8..625f6ec 100644
--- a/board/atmel/at91sam9rlek/nand.c
+++ b/board/atmel/at91sam9rlek/nand.c
@@ -67,7 +67,7 @@
 int board_nand_init(struct nand_chip *nand)
 {
 	nand->ecc.mode = NAND_ECC_SOFT;
-#ifdef CFG_NAND_DBW_16
+#ifdef CONFIG_SYS_NAND_DBW_16
 	nand->options = NAND_BUSWIDTH_16;
 #endif
 	nand->cmd_ctrl = at91sam9rlek_nand_hwcontrol;