panel/novatek-nt35950: Use refcounted allocation in place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel.

Reviewed-by: Neil Armstrong <[e-mail]>
Signed-off-by: Anusha Srivatsa <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Maxime Ripard <[e-mail]>

drivers/gpu/drm/panel/panel-novatek-nt35950.c

···
 	const struct mipi_dsi_device_info *info;
 	int i, num_dsis = 1, ret;
 
-	nt = devm_kzalloc(dev, sizeof(*nt), GFP_KERNEL);
-	if (!nt)
-		return -ENOMEM;
+	nt = devm_drm_panel_alloc(dev, struct nt35950, panel, &nt35950_panel_funcs,
+				  DRM_MODE_CONNECTOR_DSI);
+	if (IS_ERR(nt))
+		return PTR_ERR(nt);
 
 	ret = nt35950_sharp_init_vregs(nt, dev);
 	if (ret)
···
 
 	nt->dsi[0] = dsi;
 	mipi_dsi_set_drvdata(dsi, nt);
-
-	drm_panel_init(&nt->panel, dev, &nt35950_panel_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
 
 	ret = drm_panel_of_backlight(&nt->panel);
 	if (ret) {