zephyr: Replace deprecated FLASH_AREA macros with FIXED_PARTITION.

Zephyr v3.2.0 deprecated FLASH_AREA macros in favor of FIXED_PARTITION
macros, using node labels instead of node label properties to reference
flash storage partitions.

Signed-off-by: Maureen Helm <maureen.helm@intel.com>

ports/zephyr/main.c

@@ -100,8 +100,8 @@ static void vfs_init(void) {
     mp_obj_t args[] = { mp_obj_new_str_from_cstr(CONFIG_SDMMC_VOLUME_NAME) };
     bdev = MP_OBJ_TYPE_GET_SLOT(&zephyr_disk_access_type, make_new)(&zephyr_disk_access_type, ARRAY_SIZE(args), 0, args);
     mount_point_str = "/sd";
-    #elif defined(CONFIG_FLASH_MAP) && FLASH_AREA_LABEL_EXISTS(storage)
-    mp_obj_t args[] = { MP_OBJ_NEW_SMALL_INT(FLASH_AREA_ID(storage)), MP_OBJ_NEW_SMALL_INT(4096) };
+    #elif defined(CONFIG_FLASH_MAP) && FIXED_PARTITION_EXISTS(storage_partition)
+    mp_obj_t args[] = { MP_OBJ_NEW_SMALL_INT(FIXED_PARTITION_ID(storage_partition)), MP_OBJ_NEW_SMALL_INT(4096) };
     bdev = MP_OBJ_TYPE_GET_SLOT(&zephyr_flash_area_type, make_new)(&zephyr_flash_area_type, ARRAY_SIZE(args), 0, args);
     mount_point_str = "/flash";
     #endif

ports/zephyr/zephyr_storage.c

@@ -244,8 +244,8 @@ static const mp_rom_map_elem_t zephyr_flash_area_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&zephyr_flash_area_readblocks_obj) },
     { MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&zephyr_flash_area_writeblocks_obj) },
     { MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&zephyr_flash_area_ioctl_obj) },
-    #if FLASH_AREA_LABEL_EXISTS(storage)
-    { MP_ROM_QSTR(MP_QSTR_STORAGE), MP_ROM_INT(FLASH_AREA_ID(storage)) },
+    #if FIXED_PARTITION_EXISTS(storage_partition)
+    { MP_ROM_QSTR(MP_QSTR_STORAGE), MP_ROM_INT(FIXED_PARTITION_ID(storage_partition)) },
     #endif
 };
 static MP_DEFINE_CONST_DICT(zephyr_flash_area_locals_dict, zephyr_flash_area_locals_dict_table);