OMAPDSS: add THIS_MODULE owner to DSS outputs

Setup the owner field for DSS output's omap_dss_device so that module
refcounting works.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c
index 35836eb..f18c946 100644
--- a/drivers/video/omap2/dss/rfbi.c
+++ b/drivers/video/omap2/dss/rfbi.c
@@ -1020,6 +1020,7 @@
 	out->output_type = OMAP_DISPLAY_TYPE_DBI;
 	out->name = "rfbi.0";
 	out->dispc_channel = OMAP_DSS_CHANNEL_LCD;
+	out->owner = THIS_MODULE;
 
 	dss_register_output(out);
 }