ColdFire: Fix build error when CONFIG_WATCHDOG is defined

Signed-off-by: TsiChungLiew <Tsi-Chung.Liew@freescale.com>

lib_m68k/m68k_linux.c

@@ -26,6 +26,7 @@
 #include <image.h>
 #include <zlib.h>
 #include <bzlib.h>
+#include <watchdog.h>
 #include <environment.h>
 #include <asm/byteorder.h>
 
@@ -36,6 +37,8 @@ DECLARE_GLOBAL_DATA_PTR;
 #define LINUX_MAX_ENVS		256
 #define LINUX_MAX_ARGS		256
 
+#define CHUNKSZ			(64 * 1024)
+
 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 # include <status_led.h>
 # define SHOW_BOOT_PROGRESS(arg)	show_boot_progress(arg)