arm64: dts: qcom: rename AOSS QMP nodes

The Always On Subsystem (AOSS) QMP is not a power domain controller
since commit 13578045 ("arm64: dts: qcom: sc7180: Use QMP property
to control load state") and few others.  In fact, it was never a power
domain controller but rather control of power state of remote
processors.  This power state control is now handled differently, thus
the AOSS QMP nodes do not have power-domain-cells:

  sc7280-idp.dtb: power-controller@c300000: '#power-domain-cells' is a required property
  From schema: Documentation/devicetree/bindings/power/power-domain.yaml

AOSS QMP is an interface to the actuall AOSS subsystem responsible for
some of power management functions, thus let's call the nodes as
"power-management".

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221213101921.47924-4-krzysztof.kozlowski@linaro.org