arm64: dts: qcom: sc7280-idp-ec-h1: add missing QUP GPIO functions

Add default GPIO function to SPI10 and SPI14 chip-select pins on SC7280
IDP, as required by bindings.

Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220930192954.242546-7-krzysztof.kozlowski@linaro.org