msmfb: display: support for overlay wait ioctl

this adds supports for overlay wait ioctl and it allows the
userapce start overlay play and HDMI and can call wait
later point of the time

Change-Id: I8000cc52a497861e0a5fdfe58c0c049219724ab6
Signed-off-by: Nagamalleswararao Ganji <nganji@codeaurora.org>
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index a739761..ac18939 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -52,7 +52,8 @@
 
 #define MSMFB_MIXER_INFO       _IOWR(MSMFB_IOCTL_MAGIC, 148, \
 						struct msmfb_mixer_info_req)
-
+#define MSMFB_OVERLAY_PLAY_WAIT _IOWR(MSMFB_IOCTL_MAGIC, 149, \
+						struct msmfb_overlay_data)
 
 #define FB_TYPE_3D_PANEL 0x10101010
 #define MDP_IMGTYPE2_START 0x10000