ppc4xx: Add fdt support for VOM405 boards

Signed-off-by: Matthias Fuchs <mf@esd.eu>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/VOM405.h b/include/configs/VOM405.h
index ec6f205..43404fc 100644
--- a/include/configs/VOM405.h
+++ b/include/configs/VOM405.h
@@ -87,6 +87,8 @@
 #define CONFIG_CMD_PING
 #define CONFIG_CMD_EEPROM
 
+#define CONFIG_OF_LIBFDT
+#define CONFIG_OF_BOARD_SETUP
 
 #undef	CONFIG_WATCHDOG			/* watchdog disabled		*/