ARM: dts: qcom: apq8084: rename SAW nodes to power-manager

Per the power-domain.yaml, the power-controller node name is reserved
for power-domain providers. Rename SAW2 nodes to 'power-manager', the
name which is suggested by qcom,saw2.yaml

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240102-saw2-spm-regulator-v7-12-0472ec237f49@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>