ARM: dts: rockchip: rk3588s-u-boot: Add rng node

Add a node for the trng found on RK3588 SoCs.

Changes in V3:
 - Added Reviewed-By tag.

Changes in V2:
 - None

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Sughosh Ganu <sughosh.ganu@linaro.org>
diff --git a/arch/arm/dts/rk3588s-u-boot.dtsi b/arch/arm/dts/rk3588s-u-boot.dtsi
index 3cb22f3..76a8ffe 100644
--- a/arch/arm/dts/rk3588s-u-boot.dtsi
+++ b/arch/arm/dts/rk3588s-u-boot.dtsi
@@ -29,6 +29,12 @@
 			reg = <0x07 0x10>;
 		};
 	};
+
+	rng: rng@fe378000 {
+		compatible = "rockchip,trngv1";
+		reg = <0x0 0xfe378000 0x0 0x200>;
+		status = "disabled";
+	};
 };
 
 &xin24m {