ARM: dts: uniphier: add AIDET nodes

The AIDET (ARM Interrupt Detector Add-on Circuit) is a kind of
syscon block related with the interrupt controller.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-proxstream2.dtsi b/arch/arm/dts/uniphier-proxstream2.dtsi
index 0a8c049..23a6bfa 100644
--- a/arch/arm/dts/uniphier-proxstream2.dtsi
+++ b/arch/arm/dts/uniphier-proxstream2.dtsi
@@ -383,6 +383,11 @@
 		bus-width = <4>;
 	};
 
+	aidet@5fc20000 {
+		compatible = "simple-mfd", "syscon";
+		reg = <0x5fc20000 0x200>;
+	};
+
 	usb0: usb@65a00000 {
 		compatible = "socionext,uniphier-xhci", "generic-xhci";
 		status = "disabled";