samples/dfu/smp_svr_mini_boot: No Partition manager

Disabled partition manager in the single slot sample, added
overlays needed for nRF54L15 and nRF54LS05B
with no partition manager.

Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>

Author: nvlsianpu

samples/dfu/smp_svr_mini_boot/Kconfig.sysbuild

@@ -31,4 +31,7 @@ config NETCORE_IPC_RADIO_BT_HCI_IPC
 config MCUBOOT_IMAGES_ROM_END_OFFSET_AUTO
 	default "ipc_radio;ipc_radio_secondary_app" if MCUBOOT_SIGN_MERGED_BINARY
 
+config PARTITION_MANAGER
+    default n
+
 source "share/sysbuild/Kconfig"

samples/dfu/smp_svr_mini_boot/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/delete-node/ &boot_partition;
+/delete-node/ &slot0_partition;
+/delete-node/ &slot1_partition;
+/delete-node/ &storage_partition;
+
+&cpuapp_rram {
+	partitions {
+		boot_partition: partition@0 {
+			compatible = "zephyr,mapped-partition";
+			label = "mcuboot";
+			reg = <0x0 0x8000>;
+		};
+
+		slot0_partition: partition@8000 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-0";
+			reg = <0x8000 0x5a800>;
+		};
+
+		littlefs_storage: partition@62800 {
+			compatible = "zephyr,mapped-partition";
+			label = "littlefs-storage";
+			reg = <0x62800 0x6000>;
+		};
+
+		slot1_partition: partition@68800 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-1";
+			reg = <0x68800 0x60800>;
+		};
+
+		storage_partition: partition@c9000 {
+			compatible = "zephyr,mapped-partition";
+			label = "storage";
+			reg = <0xc9000 0x4000>;
+		};
+
+		unallocated: partition@cd000 {
+			compatible = "zephyr,mapped-partition";
+			label = "unallocated";
+			reg = <0xcd000 0xb0000>;
+		};
+	};
+};
+

samples/dfu/smp_svr_mini_boot/boards/nrf54ls05dk_nrf54ls05b_cpuapp.overlay

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+/delete-node/ &boot_partition;
+/delete-node/ &slot0_partition;
+/delete-node/ &slot1_partition;
+/delete-node/ &storage_partition;
+
+&cpuapp_rram {
+	partitions {
+		boot_partition: partition@0 {
+			compatible = "zephyr,mapped-partition";
+			label = "mcuboot";
+			reg = <0x0 0x10000>;
+		};
+
+		slot0_partition: partition@10000 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-0";
+			reg = <0x10000 0x36800>;
+		};
+
+		slot1_partition: partition@46800 {
+			compatible = "zephyr,mapped-partition";
+			label = "image-1";
+			reg = <0x46800 0x36800>;
+		};
+
+		empty: partition@7d000 {
+			compatible = "zephyr,mapped-partition";
+			label = "empty";
+			reg = <0x7d000 0x2000>;
+		};
+	};
+};
+

samples/dfu/smp_svr_mini_boot/pm_static.yml

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+#include "../../../boards/nrf54l15dk_nrf54l15_cpuapp.overlay"
+
+/ {
+	chosen {
+		zephyr,code-partition = &boot_partition;
+	};
+};

samples/dfu/smp_svr_mini_boot/pm_static_nrf54ls05dk_nrf54ls05b_cpuapp.yml

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2026 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+#include "../../../boards/nrf54ls05dk_nrf54ls05b_cpuapp.overlay"
+
+/ {
+	chosen {
+		zephyr,code-partition = &boot_partition;
+	};
+};

samples/dfu/smp_svr_mini_boot/sysbuild/mcuboot/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

@@ -8,7 +8,6 @@ CONFIG_SIZE_OPTIMIZATIONS=y
 CONFIG_HW_STACK_PROTECTION=y
 
 CONFIG_MAIN_STACK_SIZE=10240
-CONFIG_BOOT_MAX_IMG_SECTORS=256
 CONFIG_BOOT_BOOTSTRAP=n
 
 CONFIG_BOOT_VERSION_CMP_USE_BUILD_NUMBER=y