gpio: lynxpoint: Pass irqchip when adding gpiochip

	gc->can_sleep = false;

	gc->parent = dev;

	ret = devm_gpiochip_add_data(dev, gc, lg);

	if (ret) {

		dev_err(dev, "failed adding lp-gpio chip\n");

		return ret;

	}

	/* set up interrupts  */

	if (irq_rc && irq_rc->start) {

		struct gpio_irq_chip *girq;

		girq = &gc->irq;

		girq->chip = &lp_irqchip;

		girq->parent_handler = lp_gpio_irq_handler;

		girq->num_parents = 1;

		girq->parents = devm_kcalloc(&pdev->dev, girq->num_parents,

					     sizeof(*girq->parents),

					     GFP_KERNEL);

		if (!girq->parents)

			return -ENOMEM;

		girq->parents[0] = (unsigned)irq_rc->start;

		girq->default_type = IRQ_TYPE_NONE;

		girq->handler = handle_simple_irq;

		lp_gpio_irq_init_hw(lg);

		ret = gpiochip_irqchip_add(gc, &lp_irqchip, 0,

					   handle_simple_irq, IRQ_TYPE_NONE);

		if (ret) {

			dev_err(dev, "failed to add irqchip\n");

			return ret;

	}

		gpiochip_set_chained_irqchip(gc, &lp_irqchip,

					     (unsigned)irq_rc->start,

					     lp_gpio_irq_handler);

	ret = devm_gpiochip_add_data(dev, gc, lg);

	if (ret) {

		dev_err(dev, "failed adding lp-gpio chip\n");

		return ret;

	}

	pm_runtime_enable(dev);