arm64: dts: rockchip: add px30 otp controller

The px30 soc contains a controller for one-time-programmable memory,
so add the necessary node for it and the fields defined in it by default.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20191023224113.3268-1-heiko@sntech.de

arch/arm64/boot/dts/rockchip/px30.dtsi

@@ -664,6 +664,30 @@ saradc: saradc@ff288000 {
 		status = "disabled";
 	};
 
+	otp: nvmem@ff290000 {
+		compatible = "rockchip,px30-otp";
+		reg = <0x0 0xff290000 0x0 0x4000>;
+		clocks = <&cru SCLK_OTP_USR>, <&cru PCLK_OTP_NS>,
+			 <&cru PCLK_OTP_PHY>;
+		clock-names = "otp", "apb_pclk", "phy";
+		resets = <&cru SRST_OTP_PHY>;
+		reset-names = "phy";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Data cells */
+		cpu_id: id@7 {
+			reg = <0x07 0x10>;
+		};
+		cpu_leakage: cpu-leakage@17 {
+			reg = <0x17 0x1>;
+		};
+		performance: performance@1e {
+			reg = <0x1e 0x1>;
+			bits = <4 3>;
+		};
+	};
+
 	cru: clock-controller@ff2b0000 {
 		compatible = "rockchip,px30-cru";
 		reg = <0x0 0xff2b0000 0x0 0x1000>;