drm/armada: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert the armada drm drivers from always returning zero in
the remove callback to the void returning variant.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231102165640.3307820-21-u.kleine-koenig@pengutronix.de

drivers/gpu/drm/armada/armada_crtc.c

@@ -1066,10 +1066,9 @@ static int armada_lcd_probe(struct platform_device *pdev)
 	return component_add(&pdev->dev, &armada_lcd_ops);
 }
 
-static int armada_lcd_remove(struct platform_device *pdev)
+static void armada_lcd_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &armada_lcd_ops);
-	return 0;
 }
 
 static const struct of_device_id armada_lcd_of_match[] = {
@@ -1095,7 +1094,7 @@ MODULE_DEVICE_TABLE(platform, armada_lcd_platform_ids);
 
 struct platform_driver armada_lcd_platform_driver = {
 	.probe	= armada_lcd_probe,
-	.remove	= armada_lcd_remove,
+	.remove_new = armada_lcd_remove,
 	.driver = {
 		.name	= "armada-lcd",
 		.owner	=  THIS_MODULE,

drivers/gpu/drm/armada/armada_drv.c

@@ -226,10 +226,9 @@ static int armada_drm_probe(struct platform_device *pdev)
 					       match);
 }
 
-static int armada_drm_remove(struct platform_device *pdev)
+static void armada_drm_remove(struct platform_device *pdev)
 {
 	component_master_del(&pdev->dev, &armada_master_ops);
-	return 0;
 }
 
 static void armada_drm_shutdown(struct platform_device *pdev)
@@ -249,7 +248,7 @@ MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);
 
 static struct platform_driver armada_drm_platform_driver = {
 	.probe	= armada_drm_probe,
-	.remove	= armada_drm_remove,
+	.remove_new = armada_drm_remove,
 	.shutdown = armada_drm_shutdown,
 	.driver	= {
 		.name	= "armada-drm",