arm64: dts: qcom: sdm845: Use QMP property to control load state

Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SDM845 SoCs and drop deprecated power-domains exposed
by AOSS QMP node.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1631800770-371-8-git-send-email-sibis@codeaurora.org

arch/arm64/boot/dts/qcom/sdm845.dtsi

@@ -763,6 +763,8 @@ adsp_pas: remoteproc-adsp {
 
 		memory-region = <&adsp_mem>;
 
+		qcom,qmp = <&aoss_qmp>;
+
 		qcom,smem-states = <&adsp_smp2p_out 0>;
 		qcom,smem-state-names = "stop";
 
@@ -862,6 +864,8 @@ cdsp_pas: remoteproc-cdsp {
 
 		memory-region = <&cdsp_mem>;
 
+		qcom,qmp = <&aoss_qmp>;
+
 		qcom,smem-states = <&cdsp_smp2p_out 0>;
 		qcom,smem-state-names = "stop";
 
@@ -2979,6 +2983,8 @@ mss_pil: remoteproc@4080000 {
 			clock-names = "iface", "bus", "mem", "gpll0_mss",
 				      "snoc_axi", "mnoc_axi", "prng", "xo";
 
+			qcom,qmp = <&aoss_qmp>;
+
 			qcom,smem-states = <&modem_smp2p_out 0>;
 			qcom,smem-state-names = "stop";
 
@@ -2988,11 +2994,10 @@ mss_pil: remoteproc@4080000 {
 
 			qcom,halt-regs = <&tcsr_mutex_regs 0x23000 0x25000 0x24000>;
 
-			power-domains = <&aoss_qmp 2>,
-					<&rpmhpd SDM845_CX>,
+			power-domains = <&rpmhpd SDM845_CX>,
 					<&rpmhpd SDM845_MX>,
 					<&rpmhpd SDM845_MSS>;
-			power-domain-names = "load_state", "cx", "mx", "mss";
+			power-domain-names = "cx", "mx", "mss";
 
 			mba {
 				memory-region = <&mba_region>;
@@ -4607,7 +4612,6 @@ aoss_qmp: power-controller@c300000 {
 			mboxes = <&apss_shared 0>;
 
 			#clock-cells = <0>;
-			#power-domain-cells = <1>;
 
 			cx_cdev: cx {
 				#cooling-cells = <2>;