brcm63xx: switch to new partition layout specification

Now that we support parsing the expected upstream definition, update
the dts files to it.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

target/linux/brcm63xx/dts/homehub2a.dts

@@ -141,19 +141,26 @@
 
 	linux,part-probe = "bcm63xxpart";
 
-	cfe@0 {
-		label = "CFE";
-		reg = <0x000000 0x020000>;
-	};
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
 
-	linux@20000 {
-		label = "linux";
-		reg = <0x020000 0xfc0000>;
-	};
+		cfe@0 {
+			label = "CFE";
+			reg = <0x000000 0x020000>;
+		};
 
-	nvram@fe0000 {
-		label = "nvram";
-		reg = <0xfe0000 0x020000>;
+		linux@20000 {
+			label = "linux";
+			reg = <0x020000 0xfc0000>;
+			compatible = "brcm,bcm963xx-imagetag";
+		};
+
+		nvram@fe0000 {
+			label = "nvram";
+			reg = <0xfe0000 0x020000>;
+		};
 	};
 };