[Pkg-rust-maintainers] Bug#1098928: rust-aya-obj: FTBFS: Add loongarch64 support

[zhangdandan]

Source: rust-aya-obj
Version: 0.2.1-1
Severity: normal
Tags: patch
User: debian-loongarch at lists.debian.org
Usertags: loong64

Dear maintainers,

Compiling the rust-aya-obj failed for loong64 in the Debian Package 
Auto-Building environment.
The error log is as follows,
```
error[E0432]: unresolved import `crate::generated::btf_header`
   --> src/btf/btf.rs:23:33
    |
23 |     generated::{btf_ext_header, btf_header},
    |                                 ^^^^^^^^^^ no `btf_header` in 
`generated`

error[E0432]: unresolved imports `crate::generated::bpf_func_info`, 
`crate::generated::bpf_line_info`
  --> src/btf/info.rs:7:17
   |
7 |     generated::{bpf_func_info, bpf_line_info},
   |                 ^^^^^^^^^^^^^  ^^^^^^^^^^^^^ no `bpf_line_info` in 
`generated`
   |                 |
   |                 no `bpf_func_info` in `generated`
......
```
The full build log can be found at 
https://buildd.debian.org/status/logs.php?pkg=rust-aya-obj&arch=loong64.

Please consider the patch I attached.
Based on the attached patch, rust-aya-obj 0.2.1-1+loong64 was built 
successfully on local ENV.
```
......
    dh_builddeb -O--buildsystem=cargo
dpkg-deb: building package 'librust-aya-obj-dev' in 
'../librust-aya-obj-dev_0.2.1-1+loong64_loong64.deb'.
  dpkg-genbuildinfo -O../rust-aya-obj_0.2.1-1+loong64_loong64.buildinfo
  dpkg-genchanges -O../rust-aya-obj_0.2.1-1+loong64_loong64.changes
```

Your opinions are welcome.

Best regards,
Dandan Zhang

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