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/DrmPlane.h b/drm/DrmPlane.h
index 7fab2ba..6487776 100644
--- a/drm/DrmPlane.h
+++ b/drm/DrmPlane.h
@@ -17,9 +17,9 @@
 #ifndef ANDROID_DRM_PLANE_H_
 #define ANDROID_DRM_PLANE_H_
 
-#include <stdint.h>
 #include <xf86drmMode.h>
 
+#include <cstdint>
 #include <vector>
 
 #include "DrmCrtc.h"