pwm: stm32: Simplify using devm_pwmchip_add()

This allows to drop the platform_driver's remove function.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-stm32.c

@@ -637,7 +637,7 @@ static int stm32_pwm_probe(struct platform_device *pdev)
 	priv->chip.ops = &stm32pwm_ops;
 	priv->chip.npwm = stm32_pwm_detect_channels(priv);
 
-	ret = pwmchip_add(&priv->chip);
+	ret = devm_pwmchip_add(dev, &priv->chip);
 	if (ret < 0)
 		return ret;
 
@@ -646,13 +646,6 @@ static int stm32_pwm_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static void stm32_pwm_remove(struct platform_device *pdev)
-{
-	struct stm32_pwm *priv = platform_get_drvdata(pdev);
-
-	pwmchip_remove(&priv->chip);
-}
-
 static int __maybe_unused stm32_pwm_suspend(struct device *dev)
 {
 	struct stm32_pwm *priv = dev_get_drvdata(dev);
@@ -697,7 +690,6 @@ MODULE_DEVICE_TABLE(of, stm32_pwm_of_match);
 
 static struct platform_driver stm32_pwm_driver = {
 	.probe	= stm32_pwm_probe,
-	.remove_new = stm32_pwm_remove,
 	.driver	= {
 		.name = "stm32-pwm",
 		.of_match_table = stm32_pwm_of_match,