Add clang tidy check

Change-Id: I1c9f03e95aa0ca1977ddef84ea765222d2281b4f
diff --git a/src/overlay.hpp b/src/overlay.hpp
index 8e818c2..3bc6eb7 100644
--- a/src/overlay.hpp
+++ b/src/overlay.hpp
@@ -18,5 +18,5 @@
 #pragma once
 #include <nlohmann/json.hpp>
 
-void unloadAllOverlays(void);
+void unloadAllOverlays();
 bool loadOverlays(const nlohmann::json& systemConfiguration);