The VFS xoroshiro plugin provides a PRNG based on the Xoroshiro12+
algorithm. It is seeded initially and reseeded regularly after a fixed
amount of bytes, around 1 MiB, were produced by reading a seed file.

The plugin supports the following configuration options:

:name: sets the file-name under which the plugins exposes itself to the VFS.
  The default is 'xoroshiro'.

:seed_path: specifies the file in the VFS that is read to reseed the PRNG.

The following examplary config snippets illustrates its usage:

! + vfs
!   + dir dev
!     + jitterentropy entropy
!     + xoroshiro random | seed_path: /dev/entropy
