drm_hwcomposer: CI: Set clang-tidy level to NORMAL for some files

Some of files require small adjustments to move into NORMAL checks list.

Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>
diff --git a/drm/ResourceManager.h b/drm/ResourceManager.h
index b02bf36..773b350 100644
--- a/drm/ResourceManager.h
+++ b/drm/ResourceManager.h
@@ -34,10 +34,10 @@
 
   int Init();
   DrmDevice *GetDrmDevice(int display);
-  const std::vector<std::unique_ptr<DrmDevice>> &getDrmDevices() const {
+  const std::vector<std::unique_ptr<DrmDevice>> &GetDrmDevices() const {
     return drms_;
   }
-  int getDisplayCount() const {
+  int GetDisplayCount() const {
     return num_displays_;
   }
   bool ForcedScalingWithGpu() const {