arm64: dts: qcom: qcs404: add power-domains-cells to gcc node

As gcc now provides two GDSCs, add #power-domain-cells property to the
gcc device node.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221226042154.2666748-15-dmitry.baryshkov@linaro.org