pwm: clps711x: Drop custom .of_xlate() callback

The default of_xlate callback (of_pwm_xlate_with_flags()) does
everything the drivers expects from its .of_xlate() callback. So drop
the custom implementation.

Link: https://lore.kernel.org/r/f58336c298d536107de5cab6a57e19f957ab326c.1704835845.git.u.kleine-koenig@pengutronix.deSigned-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

drivers/pwm/pwm-clps711x.c

@@ -74,15 +74,6 @@ static const struct pwm_ops clps711x_pwm_ops = {
 	.apply = clps711x_pwm_apply,
 };
 
-static struct pwm_device *clps711x_pwm_xlate(struct pwm_chip *chip,
-					     const struct of_phandle_args *args)
-{
-	if (args->args[0] >= chip->npwm)
-		return ERR_PTR(-EINVAL);
-
-	return pwm_request_from_chip(chip, args->args[0], NULL);
-}
-
 static int clps711x_pwm_probe(struct platform_device *pdev)
 {
 	struct clps711x_chip *priv;
@@ -102,7 +93,6 @@ static int clps711x_pwm_probe(struct platform_device *pdev)
 	priv->chip.ops = &clps711x_pwm_ops;
 	priv->chip.dev = &pdev->dev;
 	priv->chip.npwm = 2;
-	priv->chip.of_xlate = clps711x_pwm_xlate;
 
 	spin_lock_init(&priv->lock);