OMAP: DSS2: use __exit for selected panel drivers

We can use __exit for the driver remove function in plain dss panels
(ie. those that do not need i2c or spi).

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
index ed46a1e..83b0316 100644
--- a/drivers/video/omap2/displays/panel-taal.c
+++ b/drivers/video/omap2/displays/panel-taal.c
@@ -819,7 +819,7 @@
 	return r;
 }
 
-static void taal_remove(struct omap_dss_device *dssdev)
+static void __exit taal_remove(struct omap_dss_device *dssdev)
 {
 	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
 	struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev);
@@ -1557,7 +1557,7 @@
 
 static struct omap_dss_driver taal_driver = {
 	.probe		= taal_probe,
-	.remove		= taal_remove,
+	.remove		= __exit_p(taal_remove),
 
 	.enable		= taal_enable,
 	.disable	= taal_disable,