Add a local copy of hpet.h.

#ifndef	__HPET__

#define	__HPET__ 1

struct hpet_info {

	unsigned long hi_ireqfreq;	/* Hz */

	unsigned long hi_flags;	/* information */

	unsigned short hi_hpet;

	unsigned short hi_timer;

};

#define	HPET_INFO_PERIODIC	0x0001	/* timer is periodic */

#define	HPET_IE_ON	_IO('h', 0x01)	/* interrupt on */

#define	HPET_IE_OFF	_IO('h', 0x02)	/* interrupt off */

#define	HPET_INFO	_IOR('h', 0x03, struct hpet_info)

#define	HPET_EPI	_IO('h', 0x04)	/* enable periodic */

#define	HPET_DPI	_IO('h', 0x05)	/* disable periodic */

#define	HPET_IRQFREQ	_IOW('h', 0x6, unsigned long)	/* IRQFREQ usec */

#endif				/* !__HPET__ */

#include <pty.h>

#include <malloc.h>

#include <linux/rtc.h>

#include <linux/hpet.h>

/* For the benefit of older linux systems which don't supply it,

   we use a local copy of hpet.h. */

/* #include <linux/hpet.h> */

#include "hpet.h"

#include <linux/ppdev.h>

#include <linux/parport.h>

#else