dt-binding: arm: sunxi: add two board compatible strings

dt-binding: arm: sunxi: add two board compatible strings

The SourceParts PopStick is a F1C200s-based stick-shaped SBC. The
publicly released version is actually v1.1.
The Lctech Pi F1C200s is a small development board using the Allwinner
F1C200s SoC.

Add the compatible string lists to the bindings documentation.

Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20230319212936.26649-5-andre.przywara@arm.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>