usb: dwc3: debug: show events parameters in hex

Printing the event parameters in decimal is not useful.
Print them in hex and make it more practical.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220720215113.1058313-1-m.grzeschik@pengutronix.de


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