Staging: comedi: kcomedilib: remove ksyms.c file

Move only the exports that we actually use into the individual
files, and delete the ksyms.c file entirely.  This will make it
easier to start cleaning up kcomedilib (i.e. delete most of it.)

Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>