msm_fb: Wifi display changes for commit ioctl

This change handles panel updates for WFD panel via
overlay_commit interface, along with conglomeration of
some common code across pan_update and overlay_commit ioctls

Change-Id: I092180a4f2be801cd5b9008e99d0b712d089746b
Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index 98050ce..d3f6792 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -71,7 +71,7 @@
 #define MSMFB_OVERLAY_VSYNC_CTRL _IOW(MSMFB_IOCTL_MAGIC, 160, unsigned int)
 #define MSMFB_VSYNC_CTRL  _IOW(MSMFB_IOCTL_MAGIC, 161, unsigned int)
 #define MSMFB_METADATA_SET  _IOW(MSMFB_IOCTL_MAGIC, 162, struct msmfb_metadata)
-#define MSMFB_OVERLAY_COMMIT      _IOW(MSMFB_IOCTL_MAGIC, 163, unsigned int)
+#define MSMFB_OVERLAY_COMMIT      _IO(MSMFB_IOCTL_MAGIC, 163)
 
 #define FB_TYPE_3D_PANEL 0x10101010
 #define MDP_IMGTYPE2_START 0x10000