Ethernet/ip device description for DBS55

- DBS55_CIP.eds
  legacy EDS for DBS55 with default process data layout 
  (no data description)

- DBS55_CIP_dfl.eds:
  EDS for DBS55 with default process data layout 
  (with data description); see parameter P176-ProcDataLayout

- DBS55_CIP_ext-a.eds:
  EDS for DBS55 with Extend-A process data layout 
  (with data description); see parameter P176-ProcDataLayout
