!3813 kernel: add OPENEULER_VERSION_CODE to version.h

Merge Pull Request from: @ci-robot 
 
PR sync from: Wei Li <liwei391@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/B6DRBWIT6GU6OOUUTQ6BH7NV5ZJUY2L2/ 
 
https://gitee.com/openeuler/kernel/issues/I7LEXY 
 
Link:https://gitee.com/openeuler/kernel/pulls/3813

 

Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Zhang Jianhua <chris.zjh@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>