pinctrl: meson: use gpio-ranges from DT

When trying to add a gpio-hog, we enter a weird loop where the gpio-ranges
is needed when gpiochip_add_data() is called but in the current implementation
the ranges are added from the driver afterwards.

A simple solution is to rely on the DR gpio-ranges attribute and remove the
call to gpiochip_add_pin_range().
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/meson/pinctrl-meson.c

@@ -555,22 +555,10 @@ static int meson_gpiolib_register(struct meson_pinctrl *pc)
 	if (ret) {
 		dev_err(pc->dev, "can't add gpio chip %s\n",
 			pc->data->name);
-		goto fail;
-	}
-
-	ret = gpiochip_add_pin_range(&pc->chip, dev_name(pc->dev),
-				     0, pc->data->pin_base,
-				     pc->chip.ngpio);
-	if (ret) {
-		dev_err(pc->dev, "can't add pin range\n");
-		goto fail;
+		return ret;
 	}
 
 	return 0;
-fail:
-	gpiochip_remove(&pc->chip);
-
-	return ret;
 }
 
 static struct regmap_config meson_regmap_config = {