drm: i915: Add SAREA fileds for determining which pipe to sync window buffer swaps to.

Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/i915_drm.h b/drivers/char/drm/i915_drm.h
index 4ce3d16..96a4688 100644
--- a/drivers/char/drm/i915_drm.h
+++ b/drivers/char/drm/i915_drm.h
@@ -104,6 +104,15 @@
 	unsigned int depth_tiled;
 	unsigned int rotated_tiled;
 	unsigned int rotated2_tiled;
+
+	int pipeA_x;
+	int pipeA_y;
+	int pipeA_w;
+	int pipeA_h;
+	int pipeB_x;
+	int pipeB_y;
+	int pipeB_w;
+	int pipeB_h;
 } drm_i915_sarea_t;
 
 /* Flags for perf_boxes