display: add uapi and shared headers to techpack folder

Move vendor specific display headers from include/uapi and
include/linux path to techpack/display.

Change-Id: I766f15694020eff9e2f1a20504f828be78d4175f
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>

msm/msm_drv.h

@@ -44,6 +44,7 @@
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/msm_drm.h>
+#include <drm/sde_drm.h>
 #include <drm/drm_gem.h>
 
 #include "sde_power_handle.h"