OMAPDSS: hide manager's enable/disable()

omap_overlay_manager struct contains enable() and disable() functions.
However, these are only meant to be used from inside omapdss, and thus
it's bad to expose the functions.

This patch adds dss_mgr_enable() and dss_mgr_disable() functions to
apply.c, which handle enabling and disabling the output.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/apply.c b/drivers/video/omap2/dss/apply.c
index c634c98..414cbd9 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -424,7 +424,7 @@
 		mc->shadow_dirty = false;
 	}
 
-	mgr->enable(mgr);
+	dispc_mgr_enable(mgr->id, true);
 }
 
 static void dss_apply_irq_handler(void *data, u32 mask)
@@ -654,3 +654,13 @@
 	return r;
 }
 
+void dss_mgr_enable(struct omap_overlay_manager *mgr)
+{
+	dispc_mgr_enable(mgr->id, true);
+}
+
+void dss_mgr_disable(struct omap_overlay_manager *mgr)
+{
+	dispc_mgr_enable(mgr->id, false);
+}
+