ARM: dts: qcom: msm8960: rename SAW nodes to power-manager

The SAW2 device is not a regulator. It is a frontend to the PMIC, which
handles voltage control, automatic voltage scaling and low-power states,
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-v7-13-0472ec237f49@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm/boot/dts/qcom/qcom-msm8960.dtsi

@@ -220,13 +220,13 @@ acc1: clock-controller@2098000 {
 			#clock-cells = <0>;
 		};
 
-		saw0: regulator@2089000 {
+		saw0: power-manager@2089000 {
 			compatible = "qcom,msm8960-saw2-cpu", "qcom,saw2";
 			reg = <0x02089000 0x1000>, <0x02009000 0x1000>;
 			regulator;
 		};
 
-		saw1: regulator@2099000 {
+		saw1: power-manager@2099000 {
 			compatible = "qcom,msm8960-saw2-cpu", "qcom,saw2";
 			reg = <0x02099000 0x1000>, <0x02009000 0x1000>;
 			regulator;