pinctrl: em: drop the wrapper around pinctrl_gpio_request()

pinctrl_gpio_request() now has the same signature as the wrapper around
it so we can drop them.

Signed-off-by: Bartosz Golaszewski <[e-mail]>
Acked-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-em.c

···
 	return irq_create_mapping(gpio_to_priv(chip)->irq_domain, offset);
 }
 
-static int em_gio_request(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_gpio_request(chip, offset);
-}
-
 static void em_gio_free(struct gpio_chip *chip, unsigned offset)
 {
 	pinctrl_gpio_free(chip, offset);
···
 	gpio_chip->direction_output = em_gio_direction_output;
 	gpio_chip->set = em_gio_set;
 	gpio_chip->to_irq = em_gio_to_irq;
-	gpio_chip->request = em_gio_request;
+	gpio_chip->request = pinctrl_gpio_request;
 	gpio_chip->free = em_gio_free;
 	gpio_chip->label = name;
 	gpio_chip->parent = dev;