OMAPDSS: DISPC: rename dispc_mgr_enable/disable to _sync

The current dispc_mgr_enable/disable function are blocking, and do a bit
too much for omapdrm. We'll expose new enable & disable functions that
will just set the bits in the registers in the following patches.

This patch renames the current functions to *_sync, to make it clear
that they are blocking, and also to free up the dispc_mgr_enable/disable
names for these new functions.

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 7a61a2f..6a21443 100644
--- a/drivers/video/omap2/dss/apply.c
+++ b/drivers/video/omap2/dss/apply.c
@@ -772,7 +772,7 @@
 	if (!dss_data.irq_enabled && need_isr())
 		dss_register_vsync_isr();
 
-	dispc_mgr_enable(mgr->id);
+	dispc_mgr_enable_sync(mgr->id);
 
 	mgr_clear_shadow_dirty(mgr);
 
@@ -1027,7 +1027,7 @@
 	spin_unlock_irqrestore(&data_lock, flags);
 
 	if (!mgr_manual_update(mgr))
-		dispc_mgr_enable(mgr->id);
+		dispc_mgr_enable_sync(mgr->id);
 
 out:
 	mutex_unlock(&apply_lock);
@@ -1052,7 +1052,7 @@
 		goto out;
 
 	if (!mgr_manual_update(mgr))
-		dispc_mgr_disable(mgr->id);
+		dispc_mgr_disable_sync(mgr->id);
 
 	spin_lock_irqsave(&data_lock, flags);