drm_hwcomposer: CI: Raise clang-tidy level from NONE to COARSE for *.h

To improve CI coverage.

Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>
diff --git a/compositor/DrmDisplayCompositor.h b/compositor/DrmDisplayCompositor.h
index f6333eb..41e708f 100644
--- a/compositor/DrmDisplayCompositor.h
+++ b/compositor/DrmDisplayCompositor.h
@@ -63,9 +63,9 @@
 
   auto ExecuteAtomicCommit(AtomicCommitArgs &args) -> int;
 
- private:
   DrmDisplayCompositor(const DrmDisplayCompositor &) = delete;
 
+ private:
   auto CommitFrame(AtomicCommitArgs &args) -> int;
 
   struct KmsState {