rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/w7o/watchdog.c b/board/w7o/watchdog.c
index 4bbd94f..131399c 100644
--- a/board/w7o/watchdog.c
+++ b/board/w7o/watchdog.c
@@ -32,7 +32,7 @@
 
 void hw_watchdog_reset(void)
 {
-    volatile ushort *hwd = (ushort *)(CFG_W7O_EBC_PB7CR & 0xfff00000);
+    volatile ushort *hwd = (ushort *)(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000);
 
     /*
      * Read the LMG's hwd register and toggle the