4BS: Keep EEP data part separate.

This is done, to prepare access to the EEP data by using the naming
scheme DB3.3...DB2.4.
Start with separate EEP data implementation.

The content of the EEP messages (for 4BS packages DB3.7...DB0.0) is done
in a separate implementation now.
This is the first step to generate EEP data packages, that could be send
later.
Also this will be a good ground to implement MSC etc.