staging: comedi: usbduxsigma: tidy up usbdux_pwm_pattern()

Rename the function so it has namespace associated with the driver.

Tidy up the function to make it more concise.

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