dt-bindings: clocks: qcom,gcc-ipq8074: support power domains

GCC inside of IPQ8074 also provides power management via built-in GDSCs.
In order to do so, '#power-domain-cells' must be set to 1.

Signed-off-by: Robert Marko <robimarko@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220515210048.483898-7-robimarko@gmail.com