staging: comedi: ni_tio: rename ni_tio_second_gate_registers_present()

For aesthetics, rename this function to shorten some of the long lines.

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>