DO NOT UPSTREAM: Fix nvmem device description

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

arch/arm64/boot/dts/marvell/armada-7040-tn48m.dts

@@ -32,7 +32,7 @@
 	prestera {
 		status = "okay";
 		compatible = "marvell,prestera";
-		base-mac-provider = <&onie_eeprom>;
+		base-mac-provider = <&eeprom_at24>;
 
 		ports {
 			port49 {
@@ -104,14 +104,6 @@
 		};
 	};
 
-	onie_eeprom: onie-eeprom {
-		status = "okay";
-		compatible = "onie,nvmem-cells";
-
-		nvmem-name = "1-00563";
-		nvmem = <&eeprom_at24>;
-	};
-
 	i2c-mux {
 		compatible = "i2c-mux-gpio";
 		#address-cells = <1>;
@@ -274,9 +266,18 @@
 	status = "okay";
 	clock-frequency = <100000>;
 
-	eeprom_at24: at24@56 {
+	eeprom_at24: eeprom@56 {
 		compatible = "atmel,24c64";
+		read-only;
 		reg = <0x56>;
+
+		nvmem-layout {
+			compatible = "onie,tlv-layout";
+
+			mac_address: mac-address {
+				#nvmem-cell-cells = <1>;
+			};
+		};
 	};
 
 	adt7473@2e {
@@ -335,6 +336,8 @@
 	phy = <&ethphy0>;
 	phy-mode = "sgmii";
 	phys = <&cp0_comphy5 2>;
+	nvmem-cells = <&mac_address 2>;
+	nvmem-cell-names = "mac-address";
 };
 
 &cp0_pcie0 {