!3605 openeuler_defconfig: enable CONFIG_UNICODE for x86 and arm64

Merge Pull Request from: @ci-robot 
 
PR sync from: Baokun Li <libaokun1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/OSTRLFV4S66JA6OM6D2ENPE5ITR4I2KU/ 
 
https://gitee.com/openeuler/kernel/issues/I853Y8 
 
Link:https://gitee.com/openeuler/kernel/pulls/3605

 

Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>