OMAPDSS: DISPC: make dispc_ovl_set_fifo_threshold() public

Make dispc_ovl_set_fifo_threshold() public so that later patches can
handle overlay fifo configuration.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 5130f88..8249731 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -1056,8 +1056,7 @@
 	return dispc.fifo_size[plane];
 }
 
-static void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low,
-		u32 high)
+void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high)
 {
 	u8 hi_start, hi_end, lo_start, lo_end;
 	u32 unit;
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index f899f0f..313a7caf 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -396,6 +396,7 @@
 		struct dispc_clock_info *cinfo);
 
 
+void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high);
 u32 dispc_ovl_get_fifo_size(enum omap_plane plane);
 u32 dispc_ovl_get_burst_size(enum omap_plane plane);
 int dispc_ovl_setup(enum omap_plane plane, struct omap_overlay_info *oi,