[llvm] [LLVM] Update ARM maintainer (PR #117002)

[Nikita Popov via llvm-commits]

nikic wrote:

@davemgreen Thanks for the response! I should have probably linked to https://llvm.org/docs/DeveloperPolicy.html#maintainers to clarify what the expectations for maintainers are.

> I would consider putting "Arms compiler team" as the first member on the list, but I can see that's not always very useful to people.

The most important requirement here is really that there is some way to contact maintainers -- I think we could add something like "Arms compiler team" if there is at least a group email address (though a pingable team on GitHub would be ideal).

> I would suggest adding @ostannard for the assembly/disassembly, as he knows a lot more about that area than me. @eefriedman has done a lot of work over the years, I'm not sure if he would want the be on the list. We should find someone who looks after target parser too. The arm abi I would add @smithp35 to but that seems to be a separate section. @nasherm mentioned he was interested recently too.

Happy to add additional people here, and we can also split this up further, no need to limit to a generic "ARM backend" category. Could do something like this:

```
#### ARM backend

David Green \
david.green at arm.com (email), [davemgreen](https://github.com/davemgreen) (GitHub)

#### ARM backend - assembler/disassembler

Oliver Stannard \
oliver.stannard at arm.com (email), [ostannard](https://github.com/ostannard) (GitHub)

#### ARM backend - ABI

Peter Smith \
peter.smith at arm.com (email), [smithp35](https://github.com/smithp35) (GitHub)
```

etc.

Related to this @asl you are currently listed as the maintainer for ARM EABI at https://github.com/llvm/llvm-project/blob/main/llvm/Maintainers.md#arm-eabi. Is that still up to date?


https://github.com/llvm/llvm-project/pull/117002