drm/sti: Make use of the helper component_compare_of

Use the common compare helper from component.

Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: NYong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20220214060819.7334-12-yong.wu@mediatek.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/gpu/drm/sti/sti_drv.c

@@ -144,11 +144,6 @@ static const struct drm_driver sti_driver = {
 	.minor = DRIVER_MINOR,
 };
 
-static int compare_of(struct device *dev, void *data)
-{
-	return dev->of_node == data;
-}
-
 static int sti_init(struct drm_device *ddev)
 {
 	struct sti_private *private;
@@ -244,7 +239,7 @@ static int sti_platform_probe(struct platform_device *pdev)
 	child_np = of_get_next_available_child(node, NULL);
 
 	while (child_np) {
-		drm_of_component_match_add(dev, &match, compare_of,
+		drm_of_component_match_add(dev, &match, component_compare_of,
 					   child_np);
 		child_np = of_get_next_available_child(node, child_np);
 	}