arm64: dts: qcom: x1e80100: Add IPCC node

Add the IPCC node, used to send and receive IPC signals with
remoteprocs.
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20240129-x1e80100-dts-missing-nodes-v6-1-2c0e691cfa3b@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/x1e80100.dtsi

@@ -699,6 +699,17 @@ gcc: clock-controller@100000 {
 			#power-domain-cells = <1>;
 		};
 
+		ipcc: mailbox@408000 {
+			compatible = "qcom,x1e80100-ipcc", "qcom,ipcc";
+			reg = <0 0x00408000 0 0x1000>;
+
+			interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-controller;
+			#interrupt-cells = <3>;
+
+			#mbox-cells = <2>;
+		};
+
 		gpi_dma2: dma-controller@800000 {
 			compatible = "qcom,x1e80100-gpi-dma", "qcom,sm6350-gpi-dma";
 			reg = <0 0x00800000 0 0x60000>;