src: move conf/ dir outside src/ dir

Lets move conf/ dir outside src/ dir.

Signed-off-by: Arturo Borrero Gonzalez <aborrero@cica.es>
conf: delete unused files

Delete some unused files. The README is obsolete.
The default_fw and fw files must be included by packagers.

Signed-off-by: Arturo Borrero Gonzalez <aborrero@cica.es>