can: usb: Add support of PCAN-Chip USB stamp module

This patch adds the support of the PCAN-Chip USB, a stamp module for
customer hardware designs, which communicates via USB 2.0 with the
hardware. The integrated CAN controller supports the protocols CAN 2.0 A/B
as well as CAN FD. The physical CAN connection is determined by external
wiring. The Stamp module with its single-sided mounting and plated
half-holes is suitable for automatic assembly.

Note that the chip is equipped with the same logic than the PCAN-USB FD.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/usb/Kconfig

@@ -72,6 +72,7 @@ config CAN_PEAK_USB
 	  PCAN-USB Pro         dual CAN 2.0b channels USB adapter
 	  PCAN-USB FD          single CAN-FD channel USB adapter
 	  PCAN-USB Pro FD      dual CAN-FD channels USB adapter
+	  PCAN-Chip USB        CAN-FD to USB stamp module
 
 	  (see also http://www.peak-system.com).