tests: boot: test_mcuboot: Add swap using offset test

Adds a variation of the test which tests swap using offset mode,
based on the swap using move test

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

tests/boot/test_mcuboot/swapped_app/Kconfig

@@ -1,9 +1,13 @@
 # Copyright 2022 NXP
+# Copyright 2025 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0
 source "Kconfig.zephyr"
 # Workaround for not being able to have commas in macro arguments
 DT_CHOSEN_Z_CODE_PARTITION := zephyr,code-partition
 
 config BUILD_OUTPUT_ADJUST_LMA
+	default "$(dt_node_reg_addr_hex,$(dt_nodelabel_path,slot1_partition))-\
+		$(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_CODE_PARTITION))+\
+		$(dt_node_int_prop_hex,$(dt_node_parent,$(dt_node_parent,$(dt_nodelabel_path,slot1_partition))),erase-block-size)" if MCUBOOT_BOOTLOADER_MODE_SWAP_USING_OFFSET
 	default "$(dt_node_reg_addr_hex,$(dt_nodelabel_path,slot1_partition))-\
 		$(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_CODE_PARTITION))"

tests/boot/test_mcuboot/testcase.yaml

@@ -1,5 +1,6 @@
 common:
   sysbuild: true
+  tags: mcuboot
   harness: console
   harness_config:
     type: multi_line
@@ -11,7 +12,6 @@ common:
       - "Swapped application booted on (.*)"
 tests:
   bootloader.mcuboot:
-    tags: mcuboot
     platform_allow:
       - frdm_k22f
       - frdm_k64f
@@ -48,8 +48,17 @@ tests:
       - frdm_k64f
       - nrf52840dk/nrf52840
   bootloader.mcuboot.assert:
-    tags: mcuboot
     platform_allow:
       - b_u585i_iot02a
     extra_configs:
       - CONFIG_ASSERT=y
+  bootloader.mcuboot.swap_using_offset:
+    platform_allow:
+      - frdm_k64f
+      - nrf5340dk/nrf5340/cpuapp
+    integration_platforms:
+      - frdm_k64f
+      - nrf5340dk/nrf5340/cpuapp
+    extra_args:
+      - SB_CONFIG_MCUBOOT_MODE_SWAP_USING_OFFSET=y
+      - swapped_app_CONFIG_MCUBOOT_BOOTLOADER_MODE_SWAP_USING_OFFSET=y