ARM: dts: uniphier: add device nodes for System Control blocks

These are mainly used for controlling clocks and resets.

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 c7423ff..f6f4bbe 100644
--- a/arch/arm/dts/uniphier-proxstream2.dtsi
+++ b/arch/arm/dts/uniphier-proxstream2.dtsi
@@ -205,3 +205,7 @@
 &pinctrl {
 	compatible = "socionext,proxstream2-pinctrl", "syscon";
 };
+
+&sysctrl {
+	compatible = "socionext,proxstream2-sysctrl";
+};