net: phy: fixed_phy: Remove unused seqcount

#include <linux/slab.h>

#include <linux/of.h>

#include <linux/gpio/consumer.h>

#include <linux/seqlock.h>

#include <linux/idr.h>

#include <linux/netdevice.h>

#include <linux/linkmode.h>

struct fixed_phy {

	int addr;

	struct phy_device *phydev;

	seqcount_t seqcount;

	struct fixed_phy_status status;

	bool no_carrier;

	int (*link_update)(struct net_device *, struct fixed_phy_status *);

	list_for_each_entry(fp, &fmb->phys, node) {

		if (fp->addr == phy_addr) {

			struct fixed_phy_status state;

			int s;

			do {

				s = read_seqcount_begin(&fp->seqcount);

			fp->status.link = !fp->no_carrier;

			/* Issue callback if user registered it. */

			if (fp->link_update)

				fp->link_update(fp->phydev->attached_dev,

						&fp->status);

			/* Check the GPIO for change in status */

			fixed_phy_update(fp);

			state = fp->status;

			} while (read_seqcount_retry(&fp->seqcount, s));

			return swphy_read_reg(reg_num, &state);

		}

	if (!fp)

		return -ENOMEM;

	seqcount_init(&fp->seqcount);

	if (irq != PHY_POLL)

		fmb->mii_bus->irq[phy_addr] = irq;