sdm: Do not allow decimation on UBWC framebuffer

MDP hardware cannot apply decimation on UBWC tiled framebuffer.

CRs-Fixed: 867832

Change-Id: I6f2f37955ac9e2b4a6d7888c146930dd3863f385

sdm/include/utils/debug.h

@@ -70,6 +70,7 @@ class Debug {
   static bool IsRotatorUbwcDisabled();
   static bool IsRotatorSplitDisabled();
   static bool IsScalarDisabled();
+  static bool IsUbwcTiledFrameBuffer();
 
  private:
   Debug();