staging: comedi: mf6x4: remove unnecessary whitespace

For aesthetics, remove the extra whitespace and align all the register
defines.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
 drivers/staging/comedi/drivers/mf6x4.c | 8 +++-----
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>