rockchip: rv1126: Read cpuid from otp and set ethaddr

Provide configuration to read cpuid and generate a persistent
MAC address in ethaddr

Signed-off-by: Tim Lunn <tim@feathertop.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rv1126-u-boot.dtsi b/arch/arm/dts/rv1126-u-boot.dtsi
index 918c307..4485980 100644
--- a/arch/arm/dts/rv1126-u-boot.dtsi
+++ b/arch/arm/dts/rv1126-u-boot.dtsi
@@ -15,6 +15,18 @@
 		compatible = "rockchip,rv1126-dmc";
 		bootph-all;
 	};
+
+	otp: otp@ff5c0000 {
+		compatible = "rockchip,rv1126-otp";
+		reg = <0xff5c0000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		status = "okay";
+
+		cpu_id: id@7 {
+			reg = <0x07 0x10>;
+		};
+	};
 };
 
 &gpio0 {