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/drm/DrmDevice.h b/drm/DrmDevice.h
index 4cbbd60..b5508af 100644
--- a/drm/DrmDevice.h
+++ b/drm/DrmDevice.h
@@ -17,8 +17,7 @@
 #ifndef ANDROID_DRM_H_
 #define ANDROID_DRM_H_
 
-#include <stdint.h>
-
+#include <cstdint>
 #include <map>
 #include <tuple>
 
@@ -86,7 +85,7 @@
   }
 
   DrmFbImporter &GetDrmFbImporter() {
-    return *mDrmFbImporter.get();
+    return *mDrmFbImporter;
   }
 
   static auto IsKMSDev(const char *path) -> bool;