intel: disable HiZ

We are not quite there yet.
diff --git a/icd/intel/layout.h b/icd/intel/layout.h
index 473aa32..fb36ee6 100644
--- a/icd/intel/layout.h
+++ b/icd/intel/layout.h
@@ -124,7 +124,7 @@
 };
 
 void intel_layout_init(struct intel_layout *layout,
-                       const struct intel_dev *dev,
+                       struct intel_dev *dev,
                        const XGL_IMAGE_CREATE_INFO *info,
                        bool scanout);