arm64: dts: qcom: sc8280xp: Add QMP handle to RPMh stats

When a handle to QMP is accessible, we can query even more internal
power management stats. Add it.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231130-topic-ddr_sleep_stats-v1-3-5981c2e764b6@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sc8280xp.dtsi

@@ -4030,6 +4030,7 @@ aoss_qmp: power-management@c300000 {
 		sram@c3f0000 {
 			compatible = "qcom,rpmh-stats";
 			reg = <0 0x0c3f0000 0 0x400>;
+			qcom,qmp = <&aoss_qmp>;
 		};
 
 		spmi_bus: spmi@c440000 {