gpio: zynq: Remove call to platform_get_irq

Remove the call to  platform_get_irq use the cached
one instead.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-zynq.c

@@ -666,9 +666,8 @@ static void zynq_gpio_restore_context(struct zynq_gpio *gpio)
 static int __maybe_unused zynq_gpio_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	int irq = platform_get_irq(pdev, 0);
-	struct irq_data *data = irq_get_irq_data(irq);
 	struct zynq_gpio *gpio = platform_get_drvdata(pdev);
+	struct irq_data *data = irq_get_irq_data(gpio->irq);
 
 	if (!irqd_is_wakeup_set(data)) {
 		zynq_gpio_save_context(gpio);
@@ -681,9 +680,8 @@ static int __maybe_unused zynq_gpio_suspend(struct device *dev)
 static int __maybe_unused zynq_gpio_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	int irq = platform_get_irq(pdev, 0);
-	struct irq_data *data = irq_get_irq_data(irq);
 	struct zynq_gpio *gpio = platform_get_drvdata(pdev);
+	struct irq_data *data = irq_get_irq_data(gpio->irq);
 	int ret;
 
 	if (!irqd_is_wakeup_set(data)) {