m68k: Add generic board support for MCF547X/8X and MCF5445X

This patch adds generic board support for MCF547X/8X and MCF5445X.
It is based on the patch about common generic board support for
M68K architecture sent by Angelo.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
diff --git a/include/configs/M5475EVB.h b/include/configs/M5475EVB.h
index e88a6bd..2f4549f 100644
--- a/include/configs/M5475EVB.h
+++ b/include/configs/M5475EVB.h
@@ -22,11 +22,13 @@
 #define CONFIG_M547x		/* define processor type */
 #define CONFIG_M5475		/* define processor type */
 
+#define CONFIG_DISPLAY_BOARDINFO
+
 #define CONFIG_MCFUART
 #define CONFIG_SYS_UART_PORT		(0)
 #define CONFIG_BAUDRATE		115200
 
-#define CONFIG_HW_WATCHDOG
+#undef CONFIG_HW_WATCHDOG
 #define CONFIG_WATCHDOG_TIMEOUT	5000	/* timeout in milliseconds, max timeout is 6.71sec */
 
 /* Command line configuration */