mn10300: use kbuild.h instead of defining macros in asm-offsets.c

#include <linux/sched.h>

#include <linux/signal.h>

#include <linux/personality.h>

#include <linux/kbuild.h>

#include <asm/ucontext.h>

#include <asm/processor.h>

#include <asm/thread_info.h>

#include "sigframe.h"

#include "mn10300-serial.h"

#define DEFINE(sym, val) \

	asm volatile("\n->" #sym " %0 " #val : : "i" (val))

#define BLANK() asm volatile("\n->")

#define OFFSET(sym, str, mem) \

	DEFINE(sym, offsetof(struct str, mem));

void foo(void)

{

	OFFSET(SIGCONTEXT_d0, sigcontext, d0);