staging: comedi: addi_apci_3xxx: move the copyright info to the driver

Move the copyright information from hwdrv_apci3xxx.c to the actual
driver, addi_apci_3xxx.c.

Reformat the information to follow the CodingStyle.

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