video: omap: Staticise non-exported symbols

These symbols are not used outside it's driver so no need to
make the symbol global.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap/lcd_osk.c b/drivers/video/omap/lcd_osk.c
index 6f8d13c..b985997 100644
--- a/drivers/video/omap/lcd_osk.c
+++ b/drivers/video/omap/lcd_osk.c
@@ -116,7 +116,7 @@
 	return 0;
 }
 
-struct platform_driver osk_panel_driver = {
+static struct platform_driver osk_panel_driver = {
 	.probe		= osk_panel_probe,
 	.remove		= osk_panel_remove,
 	.suspend	= osk_panel_suspend,