can: kvaser_usb: Improve logging messages

Replace dev->udev->dev.parent with &dev->intf->dev, when it is the
first argument passed to dev_* logging function call.

This will result in:
kvaser_usb 1-2:1.0: Format error
compared to
usb 1-2: Format error

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>