pwm: lp3943: Simplify using devm_pwmchip_add()

This allows to drop the platform_driver's remove function. This is the
only user of driver data so this can go away, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-lp3943.c

@@ -276,16 +276,7 @@ static int lp3943_pwm_probe(struct platform_device *pdev)
 	lp3943_pwm->chip.ops = &lp3943_pwm_ops;
 	lp3943_pwm->chip.npwm = LP3943_NUM_PWMS;
 
-	platform_set_drvdata(pdev, lp3943_pwm);
-
-	return pwmchip_add(&lp3943_pwm->chip);
-}
-
-static int lp3943_pwm_remove(struct platform_device *pdev)
-{
-	struct lp3943_pwm *lp3943_pwm = platform_get_drvdata(pdev);
-
-	return pwmchip_remove(&lp3943_pwm->chip);
+	return devm_pwmchip_add(&pdev->dev, &lp3943_pwm->chip);
 }
 
 #ifdef CONFIG_OF
@@ -298,7 +289,6 @@ MODULE_DEVICE_TABLE(of, lp3943_pwm_of_match);
 
 static struct platform_driver lp3943_pwm_driver = {
 	.probe = lp3943_pwm_probe,
-	.remove = lp3943_pwm_remove,
 	.driver = {
 		.name = "lp3943-pwm",
 		.of_match_table = of_match_ptr(lp3943_pwm_of_match),