tenderloin: add MDP_BACKEND_COMPOSITION define

Change-Id: I434e089336d3ab784936a669e10e1f7590572dcc
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index 7b832e7..66e181d 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -142,6 +142,7 @@
 #define MDP_OV_PLAY_NOWAIT		0x00200000
 #define MDP_SOURCE_ROTATED_90		0x00100000
 #define MDP_DPP_HSIC			0x00080000
+#define MDP_BACKEND_COMPOSITION 0x00040000
 #define MDP_BORDERFILL_SUPPORTED	0x00010000
 #define MDP_SECURE_OVERLAY_SESSION      0x00008000
 #define MDP_MEMORY_ID_TYPE_FB		0x00001000