arm64: dts: qcom: sa8775p: enable AOSS

Enable the always-on subsystem controller on SA8775P platforms for use
by upcoming support for other peripherals.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230504161755.197417-2-brgl@bgdev.pl

arch/arm64/boot/dts/qcom/sa8775p.dtsi

@@ -9,6 +9,7 @@
 #include <dt-bindings/clock/qcom,sa8775p-gcc.h>
 #include <dt-bindings/clock/qcom,sa8775p-gpucc.h>
 #include <dt-bindings/interconnect/qcom,sa8775p-rpmh.h>
+#include <dt-bindings/mailbox/qcom-ipcc.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/soc/qcom,rpmh-rsc.h>
 
@@ -987,6 +988,16 @@ pdc: interrupt-controller@b220000 {
 			interrupt-controller;
 		};
 
+		aoss_qmp: power-management@c300000 {
+			compatible = "qcom,sa8775p-aoss-qmp", "qcom,aoss-qmp";
+			reg = <0x0 0x0c300000 0x0 0x400>;
+			interrupts-extended = <&ipcc IPCC_CLIENT_AOP
+					       IPCC_MPROC_SIGNAL_GLINK_QMP
+					       IRQ_TYPE_EDGE_RISING>;
+			mboxes = <&ipcc IPCC_CLIENT_AOP IPCC_MPROC_SIGNAL_GLINK_QMP>;
+			#clock-cells = <0>;
+		};
+
 		spmi_bus: spmi@c440000 {
 			compatible = "qcom,spmi-pmic-arb";
 			reg = <0x0 0x0c440000 0x0 0x1100>,