ipv4: ipmr: move mroute data into seperate structure

	atomic_t rt_genid;

#ifdef CONFIG_IP_MROUTE

	struct sock		*mroute_sk;

	struct timer_list	ipmr_expire_timer;

	struct list_head	mfc_unres_queue;

	struct list_head	*mfc_cache_array;

	struct vif_device	*vif_table;

	int			maxvif;

	atomic_t		cache_resolve_queue_len;

	int			mroute_do_assert;

	int			mroute_do_pim;

#if defined(CONFIG_IP_PIMSM_V1) || defined(CONFIG_IP_PIMSM_V2)

	int			mroute_reg_vif_num;

#endif

	struct mr_table		*mrt;

#endif

};

#endif