message: Tympan: more RevD4 tweaks
diff: #ifndef _Tympan_h
  #define _Tympan_h
  -enum class TympanRev { A, C, D, D0, D1, D2, D3 };
  +enum class TympanRev { A, C, D, D0, D1, D2, D3, D4 };
  //constants to help define which version of Tympan is being used
  #define TYMPAN_REV_A (TympanRev::A)
  