greybus: structures added

#include <linux/device.h>

#include "greybus.h"

/*

 * AP <-> SVC message structure format:

 *

 * 

 *

 */

struct svc_msg {

	u8	function;

	u8	type;

	u8	version_major;

	u8	version_minor;

	u16	payload_length;

};

struct ap_msg {

	u8 *data;

	int size;