vhdl-file-footer

vhdl-file-footer is a variable defined in `vhdl-mode.el'.
Its value is

""

Documentation:
String or file to insert as file footer.
If the string specifies an existing file name, the contents of the file is
inserted, otherwise the string itself is inserted as file footer (i.e. at
the end of the file).
Type `C-j' for newlines.
The same keywords as in option `vhdl-file-header' can be used.

You can customize this variable.