arm64: dts: bcm4908: nvmem-layout conversion

nvmem-layout is a more flexible replacement for nvmem-cells.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://lore.kernel.org/r/20241203233632.184861-1-rosenp@gmail.com
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>

Author: neheb

arch/arm64/boot/dts/broadcom/bcmbca/bcm4906-netgear-r8000p.dts

@@ -144,16 +144,20 @@
 		#size-cells = <1>;
 
 		partition@0 {
-			compatible = "nvmem-cells";
 			label = "cferom";
 			reg = <0x0 0x100000>;
-
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0 0x0 0x100000>;
 
-			base_mac_addr: mac@106a0 {
-				reg = <0x106a0 0x6>;
+			nvmem-layout {
+				compatible = "fixed-layout";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				base_mac_addr: mac@106a0 {
+					reg = <0x106a0 0x6>;
+				};
 			};
 		};