gpio: omap: Use device_get_match_data() helper

Use the device_get_match_data() helper instead of open coding.

Signed-off-by: Tian Tao <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-omap.c

···
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *node = dev->of_node;
-	const struct of_device_id *match;
 	const struct omap_gpio_platform_data *pdata;
 	struct gpio_bank *bank;
 	struct irq_chip *irqc;
 	int ret;
 
-	match = of_match_device(of_match_ptr(omap_gpio_match), dev);
+	pdata = device_get_match_data(dev);
 
-	pdata = match ? match->data : dev_get_platdata(dev);
+	pdata = pdata ?: dev_get_platdata(dev);
 	if (!pdata)
 		return -EINVAL;