can: usb: PEAK-System Technik PCAN-USB specific part

can: usb: PEAK-System Technik PCAN-USB specific part

This patch adds the specific part which handles the PCAN-USB adapter from
PEAK-System Technik (http://www.peak-system.com). The PCAN-USB adapter is
a sja1000 based, mono-channel USB 1.1 adapter compliant with CAN
specifications 2.0A (11-bit ID) and 2.0B (29-bit ID).

Tested-by: Oliver Hartkopp <[email protected]>
Acked-by: Wolfgang Grandegger <[email protected]>
Signed-off-by: Stephane Grosjean <[email protected]>
Signed-off-by: Marc Kleine-Budde <[email protected]>