gpio: wcd934x: mark the GPIO controller as sleeping

The slimbus regmap passed to the GPIO driver down from MFD does not use
fast_io. This means a mutex is used for locking and thus this GPIO chip
must not be used in atomic context. Change the can_sleep switch in
struct gpio_chip to true.

Fixes: 59c3246834 ("gpio: wcd934x: Add support to wcd934x gpio controller")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

drivers/gpio/gpio-wcd934x.c

@@ -103,7 +103,7 @@ static int wcd_gpio_probe(struct platform_device *pdev)
 	chip->base = -1;
 	chip->ngpio = WCD934X_NPINS;
 	chip->label = dev_name(dev);
-	chip->can_sleep = false;
+	chip->can_sleep = true;
 
 	return devm_gpiochip_add_data(dev, chip, data);
 }