dt-bindings: arm: qcom: Document IPQ4018 boards

Add compatibles for existing boards with IPQ4018 SoC: ALFA Network
AP120C-AC and 8devices Jalapeno.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221013155418.47577-2-krzysztof.kozlowski@linaro.org