boards: adi: add default max32655 storage partition

Add a default 64K storage partition for max32655 boards.
Remove no longer required overlays.

Signed-off-by: Rob Cornall <[email protected]>

Author: rcornall-adi

boards/adi/max32655evkit/max32655evkit_max32655_m4.dts

@@ -19,7 +19,7 @@
 		zephyr,console = &uart0;
 		zephyr,shell-uart = &uart0;
 		zephyr,sram = &sram2;
-		zephyr,flash = &flash0;
+		zephyr,flash = &code_partition;
 	};
 
 	leds {
@@ -168,3 +168,20 @@
 		status = "okay";
 	};
 };
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		code_partition: partition@0 {
+			label = "image-m4";
+			reg = <0x0 DT_SIZE_K(448)>;
+		};
+		storage_partition: partition@70000 {
+			label = "storage";
+			reg = <0x70000 DT_SIZE_K(64)>;
+		};
+	};
+};

boards/adi/max32655fthr/max32655fthr_max32655_m4.dts

@@ -19,7 +19,7 @@
 		zephyr,console = &uart0;
 		zephyr,shell-uart = &uart0;
 		zephyr,sram = &sram2;
-		zephyr,flash = &flash0;
+		zephyr,flash = &code_partition;
 	};
 
 	leds {
@@ -199,3 +199,20 @@
 		status = "okay";
 	};
 };
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		code_partition: partition@0 {
+			label = "image-m4";
+			reg = <0x0 DT_SIZE_K(448)>;
+		};
+		storage_partition: partition@70000 {
+			label = "storage";
+			reg = <0x70000 DT_SIZE_K(64)>;
+		};
+	};
+};