disp: msm: sde: get ctl scheduler status at each vsync

Get controller scheduler status at each vsync to verify
pending frame status.

Change-Id: I01401a57b68828294299977a7be7e796d07c7472
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>

msm/sde/sde_hw_ctl.h

@@ -12,6 +12,8 @@
 #include "sde_hw_sspp.h"
 #include "sde_hw_blk.h"
 
+#define INVALID_CTL_STATUS 0xfffff88e
+
 /**
  * sde_ctl_mode_sel: Interface mode selection
  * SDE_CTL_MODE_SEL_VID:    Video mode interface