panel/newvision-nv3052c: 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-newvision-nv3052c.c

···
 	struct nv3052c *priv;
 	int err;
 
-	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
+	priv = devm_drm_panel_alloc(dev, struct nv3052c, panel, &nv3052c_funcs,
+				    DRM_MODE_CONNECTOR_DPI);
+	if (IS_ERR(priv))
+		return PTR_ERR(priv);
 
 	priv->dev = dev;
 
···
 	priv->dbi.read_commands = NULL;
 
 	spi_set_drvdata(spi, priv);
-
-	drm_panel_init(&priv->panel, dev, &nv3052c_funcs,
-		       DRM_MODE_CONNECTOR_DPI);
 
 	err = drm_panel_of_backlight(&priv->panel);
 	if (err)