pwm: bcm-kona: 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-bcm-kona.c

@@ -267,8 +267,6 @@ static int kona_pwmc_probe(struct platform_device *pdev)
 	if (kp == NULL)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, kp);
-
 	kp->chip.dev = &pdev->dev;
 	kp->chip.ops = &kona_pwm_ops;
 	kp->chip.npwm = 6;
@@ -298,20 +296,13 @@ static int kona_pwmc_probe(struct platform_device *pdev)
 
 	clk_disable_unprepare(kp->clk);
 
-	ret = pwmchip_add(&kp->chip);
+	ret = devm_pwmchip_add(&pdev->dev, &kp->chip);
 	if (ret < 0)
 		dev_err(&pdev->dev, "failed to add PWM chip: %d\n", ret);
 
 	return ret;
 }
 
-static int kona_pwmc_remove(struct platform_device *pdev)
-{
-	struct kona_pwmc *kp = platform_get_drvdata(pdev);
-
-	return pwmchip_remove(&kp->chip);
-}
-
 static const struct of_device_id bcm_kona_pwmc_dt[] = {
 	{ .compatible = "brcm,kona-pwm" },
 	{ },
@@ -324,7 +315,6 @@ static struct platform_driver kona_pwmc_driver = {
 		.of_match_table = bcm_kona_pwmc_dt,
 	},
 	.probe = kona_pwmc_probe,
-	.remove = kona_pwmc_remove,
 };
 module_platform_driver(kona_pwmc_driver);