staging: comedi: das08.c: reformat copyright comment

Replace double spaces with single spaces at the start of each line in
the copyright comment at the top of the file.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>