Bug#1040750: please add loong64 arch support in lintian

[zhangdandan <zhangdandan@loongson.cn>]

Dear maintianers,

> The loong64 support bus been merged , chould you give a new lintian
> package to sid.
>
> [1] https://salsa.debian.org/lintian/lintian/-/merge_requests/484

Please review, and update lintian package.

Submitting loong64 support to linux and grub2, please see [1] and [2].
The merge-request pipeline failures [3][4] for both linux and grub2 are related to linetian checks.

[1]:https://salsa.debian.org/kernel-team/linux/-/merge_requests/879
[2]:https://salsa.debian.org/grub-team/grub/-/merge_requests/42
[3]:https://salsa.debian.org/WeihaoLi/linux/-/pipelines/601901
[4]:https://salsa.debian.org/jiegec/grub/-/pipelines/599481

Thanks,
Dandan Zhang