USB: serial: cp210x: add ID for MGP Instruments PDS100

[ Upstream commit a0d9d868491a362d421521499d98308c8e3a0398 ]

The radiation meter has the text MGP Instruments PDS-100G or PDS-100GN
produced by Mirion Technologies. Tested by forcing the driver
association with

  echo 10c4 863c > /sys/bus/usb-serial/drivers/cp210x/new_id

and then setting the serial port in 115200 8N1 mode. The device
announces ID_USB_VENDOR_ENC=Silicon\x20Labs and ID_USB_MODEL_ENC=PDS100

Signed-off-by: Christian Häggström <christian.haggstrom@orexplore.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>