arm64: dts: rockchip: add thermal support to Quartz64 Model A

Add the thermal nodes for the Quartz64 Model A.
The Model A supports a single speed gpio fan.

Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20210728180034.717953-9-pgwipeout@gmail.com


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