gpio: vf610: connect GPIO label to dev name

Current GPIO label is fixed, so can't distinguish different GPIO
controllers through labels. Use dev name instead.

Fixes: 7f2691a1 ("gpio: vf610: add gpiolib/IRQ chip driver for Vybrid")
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

drivers/gpio/gpio-vf610.c

@@ -304,7 +304,7 @@ static int vf610_gpio_probe(struct platform_device *pdev)
 
 	gc = &port->gc;
 	gc->parent = dev;
-	gc->label = "vf610-gpio";
+	gc->label = dev_name(dev);
 	gc->ngpio = VF610_GPIO_PER_PORT;
 	gc->base = of_alias_get_id(np, "gpio") * VF610_GPIO_PER_PORT;