can: kvaser_usb: add support for Kvaser Leaf v2 and usb mini PCIe

This patch adds support for the Kvaser Leaf v2 and Leaf usb mini
PCIe card.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>