microblaze: Use asm generic cmpxchg.h for !SMP case

#ifndef _ASM_MICROBLAZE_CMPXCHG_H

#define _ASM_MICROBLAZE_CMPXCHG_H

#include <linux/irqflags.h>

void __bad_xchg(volatile void *ptr, int size);

static inline unsigned long __xchg(unsigned long x, volatile void *ptr,

								int size)

{

	unsigned long ret;

	unsigned long flags;

	switch (size) {

	case 1:

		local_irq_save(flags);

		ret = *(volatile unsigned char *)ptr;

		*(volatile unsigned char *)ptr = x;

		local_irq_restore(flags);

		break;

	case 4:

		local_irq_save(flags);

		ret = *(volatile unsigned long *)ptr;

		*(volatile unsigned long *)ptr = x;

		local_irq_restore(flags);

		break;

	default:

		__bad_xchg(ptr, size), ret = 0;

		break;

	}

	return ret;

}

#define xchg(ptr, x) \

	((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))

#ifndef CONFIG_SMP

# include <asm-generic/cmpxchg.h>

#include <asm-generic/cmpxchg-local.h>

#endif

#endif /* _ASM_MICROBLAZE_CMPXCHG_H */