rockchip: px30: add support for HW RNG for Odroid Go Advance

The Odroid Go Advance has a hardware random number generator present.
The device does not have an upstream Linux driver, but does have a
U-Boot driver. Add the appropriate node so that the hardware RNG can be
used in U-Boot.

Signed-off-by: Chris Morgan <[email protected]>
Reviewed-by: Kever Yang <[email protected]>

arch/arm/dts/rk3326-odroid-go2-u-boot.dtsi

@@ -16,6 +16,12 @@
 		serial2 = &uart2;
 		spi0 = &sfc;
 	};
+
+	rng: rng@ff0b0000 {
+		compatible = "rockchip,cryptov2-rng";
+		reg = <0x0 0xff0b0000 0x0 0x4000>;
+		status = "okay";
+	};
 };
 
 /* U-Boot clk driver for px30 cannot set GPU_CLK */