gpiolib: use proper API to pack pin configuration parameters

Instead of open coded macro use, call pinconf_to_config_packed().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/gpio/gpiolib.c

@@ -2110,7 +2110,7 @@ static int gpio_set_config(struct gpio_desc *desc, enum pin_config_param mode)
 		break;
 	}
 
-	config = PIN_CONF_PACKED(mode, arg);
+	config = pinconf_to_config_packed(mode, arg);
 	return gpio_do_set_config(gc, gpio_chip_hwgpio(desc), config);
 }