sdm: Update perflock enum for display layer hint

Change updates the perflock enum used to send the
display layer hint. Needed due to reordering of the
resource enums.

Change-Id: Idd6ca1098a4e21c5879a04459d0f2838d4996fc3
diff --git a/sdm/libs/hwc/cpuhint.h b/sdm/libs/hwc/cpuhint.h
index 14ecd93..a4a7758 100644
--- a/sdm/libs/hwc/cpuhint.h
+++ b/sdm/libs/hwc/cpuhint.h
@@ -44,7 +44,7 @@
   void Reset();
 
  private:
-  enum { HINT =  0x4701 /* 47-display layer hint, 01-Enable */ };
+  enum { HINT =  0x4501 /* 45-display layer hint, 01-Enable */ };
   bool enabled_ = false;
   // frames to wait before setting this hint
   int pre_enable_window_ = 0;