overlays: Add overlay for Seeed Studio CAN BUS FD HAT v1 (based on mcp2517fd)

This patch adds the overlay for the Seeed Studio CAN BUS FD HAT v1 with two CAN
FD Channels (based on mcp2517fd).

https://www.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi-p-4072.html



The overlay was generated by:
ovmerge -c spi1-1cs-overlay.dts,cs0_pin=18,cs0_spidev=false \
           mcp251xfd-overlay.dts,spi0-0,interrupt=25 \
           mcp251xfd-overlay.dts,spi1-0,interrupt=24

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>