arm64: dts: qcom: sc7280: Use QMP property to control load state

Use the Qualcomm Mailbox Protocol (QMP) property to control the load
state resources on SC7280 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/1631800770-371-7-git-send-email-sibis@codeaurora.org

arch/arm64/boot/dts/qcom/sc7280.dtsi

@@ -13,7 +13,6 @@
 #include <dt-bindings/interconnect/qcom,sc7280.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/mailbox/qcom-ipcc.h>
-#include <dt-bindings/power/qcom-aoss-qmp.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/reset/qcom,sdm845-aoss.h>
 #include <dt-bindings/reset/qcom,sdm845-pdc.h>
@@ -2554,7 +2553,6 @@ IPCC_MPROC_SIGNAL_GLINK_QMP
 					IPCC_MPROC_SIGNAL_GLINK_QMP>;
 
 			#clock-cells = <0>;
-			#power-domain-cells = <1>;
 		};
 
 		spmi_bus: spmi@c440000 {