gpio: iop: Use devm_gpiochip_add_data() for gpio registration

Use devm_gpiochip_add_data() for GPIO registration.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>

drivers/gpio/gpio-iop.c

@@ -114,7 +114,7 @@ static int iop3xx_gpio_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	return gpiochip_add_data(&iop3xx_chip, NULL);
+	return devm_gpiochip_add_data(&pdev->dev, &iop3xx_chip, NULL);
 }
 
 static struct platform_driver iop3xx_gpio_driver = {