rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/mcf523x/cpu.c b/cpu/mcf523x/cpu.c
index bdc152f..1ce90fd 100644
--- a/cpu/mcf523x/cpu.c
+++ b/cpu/mcf523x/cpu.c
@@ -98,7 +98,7 @@
 	u32 wdog_module = 0;
 
 	/* set timeout and enable watchdog */
-	wdog_module = ((CFG_CLK / CFG_HZ) * CONFIG_WATCHDOG_TIMEOUT);
+	wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT);
 	wdog_module |= (wdog_module / 8192);
 	wdp->mr = wdog_module;