According to REUSE FAQ in a case like this (reusing code from Go) it's
better to provide a custom license that matches exactly the BSD variant
used by the upstream Go compiler.

This is described https://reuse.software/faq/#license-templates
and in more detail at https://reuse.software/faq/#custom-license



Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>