arm64: dts: rockchip: add infrared receiver node to RK3399 Firefly

This adds the RK3399 Firefly’s infrared receiver to its dts.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Link: https://lore.kernel.org/r/20210613215237.830160-2-pbrobinson@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>