dt-bindings: arm: qcom: Add ipq9574 compatible

Document the new ipq9574 SoC/board device tree bindings

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230214163116.9924-6-quic_devipriy@quicinc.com