x86/platform/ce4100: Add header file for reboot type

Add header file for reboot type to fix this build failure:

error: 'reboot_type' undeclared (first use in this function)
error: 'BOOT_KBD' undeclared (first use in this function)

Signed-off-by: Xiong Zhou <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1307091053280.28371@M2420
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/platform/ce4100/ce4100.c

···
 #include <linux/module.h>
 #include <linux/serial_reg.h>
 #include <linux/serial_8250.h>
+#include <linux/reboot.h>
 
 #include <asm/ce4100.h>
 #include <asm/prom.h>