gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enable

Missing pm_runtime_disable call in driver remove path caused
an unbalanaced pm_runtime_enable warning when driver was reloaded

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-lynxpoint.c b/drivers/gpio/gpio-lynxpoint.c
index 761c470..2d9ca60 100644
--- a/drivers/gpio/gpio-lynxpoint.c
+++ b/drivers/gpio/gpio-lynxpoint.c
@@ -444,6 +444,7 @@
 {
 	struct lp_gpio *lg = platform_get_drvdata(pdev);
 	int err;
+	pm_runtime_disable(&pdev->dev);
 	err = gpiochip_remove(&lg->chip);
 	if (err)
 		dev_warn(&pdev->dev, "failed to remove gpio_chip.\n");