ARM64: dts: amlogic: gxbb: Enable NVMEM

Add the NVMEM device node in the DTSI.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
[khilman: dropped driver cleanup hunk]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi

@@ -108,6 +108,24 @@
 		};
 	};
 
+	efuse: efuse {
+		compatible = "amlogic,meson-gxbb-efuse";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		sn: sn@14 {
+			reg = <0x14 0x10>;
+		};
+
+		eth_mac: eth_mac@34 {
+			reg = <0x34 0x10>;
+		};
+
+		bid: bid@46 {
+			reg = <0x46 0x30>;
+		};
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 13