boot: zephyr: Move zephyr sources to zephyr/subsys/mcuboot_svc

Relocate `$mcuboot/boot/zephyr/*.c` files to
`$mcuboot/zephyr/subsys/mcuboot_svc/` to become a
reusable subsystem.

NOTE: keys.c was not put into `mcuboot_svc` as this
will need to be project-specific and may need to be kept
in a different module.

Verified by:
1. Building `$mcuboot/boot/zephyr` and verifying the
   zephyr.map files showed the same functions and
   that the flash an ram usage was the same.
2. Further verified that the following testcases still pass with
   mcuboot options on twister:
      mcuboot/boot/zephyr
      zephyr/tests/subsys/dfu
      zephyr/samples/subsys/mgmt/mcumgr/smp_svr

Resolve #1410

Signed-off-by: Gregory SHUE <[email protected]>

Author: legrand-gregshue

zephyr/subsys/mcuboot_svc/CMakeLists.txt

@@ -43,28 +43,28 @@ endif()
 
 zephyr_library_include_directories(
   ${ZEPHYR_MCUBOOT_MODULE_DIR}/zephyr/include
-  ${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/targets
+  targets
   )
 if(EXISTS targets/${BOARD}.h)
   zephyr_library_compile_definitions(MCUBOOT_TARGET_CONFIG="${BOARD}.h")
 endif()
 
 # Zephyr port-specific sources.
 zephyr_library_sources(
-  ${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/main.c
-  ${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/flash_map_extended.c
-  ${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/os.c
+  main.c
+  flash_map_extended.c
+  os.c
   )
 
 if(DEFINED CONFIG_ENABLE_MGMT_PERUSER)
   zephyr_library_sources(
-    ${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/boot_serial_extensions.c
+    boot_serial_extensions.c
     )
 endif()
 
 if(NOT DEFINED CONFIG_FLASH_PAGE_LAYOUT)
   zephyr_library_sources(
-    ${ZEPHYR_MCUBOOT_MODULE_DIR}/boot/zephyr/flash_map_legacy.c
+    flash_map_legacy.c
     )
 endif()
 
@@ -89,7 +89,7 @@ endif()
 
 if(CONFIG_SINGLE_APPLICATION_SLOT)
 zephyr_library_sources(
-  ${BOOT_DIR}/zephyr/single_loader.c
+  single_loader.c
   )
 zephyr_library_include_directories(${BOOT_DIR}/bootutil/src)
 else()
@@ -208,7 +208,7 @@ if(CONFIG_BOOT_ENCRYPT_EC256)
 endif()
 
 if(CONFIG_MCUBOOT_SERIAL)
-  zephyr_sources(${BOOT_DIR}/zephyr/serial_adapter.c)
+  zephyr_sources(serial_adapter.c)
   zephyr_sources(${BOOT_DIR}/boot_serial/src/boot_serial.c)
   zephyr_sources(${BOOT_DIR}/boot_serial/src/serial_recovery_cbor.c)
   zephyr_sources(${BOOT_DIR}/boot_serial/src/zcbor_decode.c)
@@ -229,6 +229,6 @@ endif()
 
 if(CONFIG_MCUBOOT_CLEANUP_ARM_CORE)
 zephyr_library_sources(
-  ${BOOT_DIR}/zephyr/arm_cleanup.c
+  arm_cleanup.c
 )
 endif()