The rom_to_file component requests a ROM session and writes the content of the
ROM dataspace to a File_system. It responds to configuration and ROM-module
updates.

The name of the ROM module must be specified via the 'rom' attribute of the
components '<config>' node

! <config rom="pointer">
!   <vfs> <fs/> </vfs>
! </config>

See run/rom_to_file.run for an example.
