pinctrl/amd: Drop pinctrl_unregister for devm_ registered device

It's not necessary to unregister pin controller device registered
with devm_pinctrl_register() and using pinctrl_unregister() leads
to a double free.

Fixes: 3bfd44306c65 ("pinctrl: amd: Add support for additional GPIO")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
static void amd_gpio_irq_eoi(struct irq_data *d)
{
	u32 reg;
	unsigned long flags;
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct amd_gpio *gpio_dev = gpiochip_get_data(gc);

	spin_lock_irqsave(&gpio_dev->lock, flags);
	reg = readl(gpio_dev->base + WAKE_INT_MASTER_REG);
	reg |= EOI_MASK;
	writel(reg, gpio_dev->base + WAKE_INT_MASTER_REG);
	spin_unlock_irqrestore(&gpio_dev->lock, flags);
}

static void amd_gpio_irq_eoi(struct irq_data *d)
{
	u32 reg;
	unsigned long flags;
	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
	struct amd_gpio *gpio_dev = gpiochip_get_data(gc);

	spin_lock_irqsave(&gpio_dev->lock, flags);
	reg = readl(gpio_dev->base + WAKE_INT_MASTER_REG);
	reg |= EOI_MASK;
	writel(reg, gpio_dev->base + WAKE_INT_MASTER_REG);
	spin_unlock_irqrestore(&gpio_dev->lock, flags);
}
