add support for sw_64 and loongarch64
see also: https://en.wikipedia.org/wiki/Sunway_(processor) https://developer.wxiat.com/understand/osrepo
https://en.wikipedia.org/wiki/Loongson#LoongArch https://github.com/loongarch64
Metadata Update from @tkopecek: - Pull-request tagged with: testing-ready
Metadata Update from @mfilip: - Pull-request tagged with: testing-done
Commit 6f4b3caf fixes this pull-request
Pull-Request has been merged by tkopecek
add support for sw_64 and loongarch64
see also:
https://en.wikipedia.org/wiki/Sunway_(processor)
https://developer.wxiat.com/understand/osrepo
https://en.wikipedia.org/wiki/Loongson#LoongArch
https://github.com/loongarch64