arm64: dts: renesas: r8a77995: draak: Enable CAN0, CAN1

Enable both CAN0 and CAN1 controllers on R8A77995 Draak board,
since they are available on connectors CN43, CN44 respectively.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>