of: unittest: make unittest_gpio_remove() consistent with unittest_gpio_probe()

On the ->remove() stage the callback uses physical device node instead of one
from GPIO chip and the variable name which is different to one used in
unittest_gpio_probe(). Make these consistent with unittest_gpio_probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220708214539.7254-2-andriy.shevchenko@linux.intel.com

drivers/of/unittest.c

@@ -1620,20 +1620,19 @@ static int unittest_gpio_probe(struct platform_device *pdev)
 
 static int unittest_gpio_remove(struct platform_device *pdev)
 {
-	struct unittest_gpio_dev *gdev = platform_get_drvdata(pdev);
+	struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev);
 	struct device *dev = &pdev->dev;
-	struct device_node *np = pdev->dev.of_node;
 
-	dev_dbg(dev, "%s for node @%pOF\n", __func__, np);
+	dev_dbg(dev, "%s for node @%pfw\n", __func__, devptr->chip.fwnode);
 
-	if (!gdev)
+	if (!devptr)
 		return -EINVAL;
 
-	if (gdev->chip.base != -1)
-		gpiochip_remove(&gdev->chip);
+	if (devptr->chip.base != -1)
+		gpiochip_remove(&devptr->chip);
 
 	platform_set_drvdata(pdev, NULL);
-	kfree(gdev);
+	kfree(devptr);
 
 	return 0;
 }