usb: dwc3: dwc3-octeon: Pass dwc3_octeon to setup functions

Pass dwc3_octeon instead of just the base. It fits with the
function names and it requires less change in the future if
access to dwc3_octeon is needed.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/ZMd/gt58laSlqAAT@lenoch


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>