[PWGLF] Update inelGt.h (#11579)

Co-authored-by: ALICE Builder <alibuild@users.noreply.github.com>

Author: njacazio

PWGLF/Utils/inelGt.h

@@ -19,6 +19,10 @@
 #ifndef PWGLF_UTILS_INELGT_H_
 #define PWGLF_UTILS_INELGT_H_
 
+#include "Framework/O2DatabasePDGPlugin.h"
+
+#include "TParticlePDG.h"
+
 #include <vector>
 
 namespace o2