gpio: elkhartlake: reuse pm_ops from Intel Tangier driver

Reuse tng_gpio_pm_ops from Intel Tangier driver instead of calling
them through a local copy.

Signed-off-by: Raag Jadav <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Andy Shevchenko <[e-mail]>

drivers/gpio/gpio-elkhartlake.c

···
 	return 0;
 }
 
-static int ehl_gpio_suspend(struct device *dev)
-{
-	return tng_gpio_suspend(dev);
-}
-
-static int ehl_gpio_resume(struct device *dev)
-{
-	return tng_gpio_resume(dev);
-}
-
-static DEFINE_SIMPLE_DEV_PM_OPS(ehl_gpio_pm_ops, ehl_gpio_suspend, ehl_gpio_resume);
-
 static const struct platform_device_id ehl_gpio_ids[] = {
 	{ "gpio-elkhartlake" },
 	{ }
···
 static struct platform_driver ehl_gpio_driver = {
 	.driver	= {
 		.name	= "gpio-elkhartlake",
-		.pm	= pm_sleep_ptr(&ehl_gpio_pm_ops),
+		.pm	= pm_sleep_ptr(&tng_gpio_pm_ops),
 	},
 	.probe		= ehl_gpio_probe,
 	.id_table	= ehl_gpio_ids,