drm/omap: convert dss_mgr_connect to accept omap_channel

We are removing uses of 'struct omap_overlay_manager'. This patch
changes dss_mgr_connect() to accept 'enum omap_channel' instead of
'struct omap_overlay_manager'.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 640ba08..44086ce 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -82,7 +82,7 @@
 int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops);
 void dss_uninstall_mgr_ops(void);
 
-int dss_mgr_connect(struct omap_overlay_manager *mgr,
+int dss_mgr_connect(enum omap_channel channel,
 		struct omap_dss_device *dst);
 void dss_mgr_disconnect(struct omap_overlay_manager *mgr,
 		struct omap_dss_device *dst);