staging: comedi: kcomedilib: Fixed coding style issue

Fixed checkpatch.pl warning in kcomedilib_main.c:
 - Block comments use * on subsequent lines

Signed-off-by: Nayeemahmed Badebade <itachi.opsrc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>