rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0913bb8..fe34a48 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -492,7 +492,7 @@
 void nand_wait_ready(struct mtd_info *mtd)
 {
 	struct nand_chip *chip = mtd->priv;
-	u32 timeo = (CFG_HZ * 20) / 1000;
+	u32 timeo = (CONFIG_SYS_HZ * 20) / 1000;
 
 	reset_timer();
 
@@ -831,9 +831,9 @@
 	int state = this->state;
 
 	if (state == FL_ERASING)
-		timeo = (CFG_HZ * 400) / 1000;
+		timeo = (CONFIG_SYS_HZ * 400) / 1000;
 	else
-		timeo = (CFG_HZ * 20) / 1000;
+		timeo = (CONFIG_SYS_HZ * 20) / 1000;
 
 	if ((state == FL_ERASING) && (this->options & NAND_IS_AND))
 		this->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1);