nrf/modules/uos: Add ilistdir to uos module.

This was missed in the initial implementation of the uos module.
Signed-off-by: Damien George <damien@micropython.org>

ports/nrf/modules/uos/moduos.c

@@ -145,6 +145,7 @@ STATIC const mp_rom_map_elem_t os_module_globals_table[] = {
 #if MICROPY_VFS
     { MP_ROM_QSTR(MP_QSTR_chdir), MP_ROM_PTR(&mp_vfs_chdir_obj) },
     { MP_ROM_QSTR(MP_QSTR_getcwd), MP_ROM_PTR(&mp_vfs_getcwd_obj) },
+    { MP_ROM_QSTR(MP_QSTR_ilistdir), MP_ROM_PTR(&mp_vfs_ilistdir_obj) },
     { MP_ROM_QSTR(MP_QSTR_listdir), MP_ROM_PTR(&mp_vfs_listdir_obj) },
     { MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&mp_vfs_mkdir_obj) },
     { MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&mp_vfs_remove_obj) },