dumputils: add C2 AIDL HAL

Dump C2 AIDL process's threads in bugreport

With this change, C2 Hal's process is dumped like below

```
----- pid 972 at 2025-07-09 17:56:51.111814986+0800 -----
Cmd line: /vendor/bin/hw/google.hardware.media.c2@3.0-service
```

Bug: 430492530
Flag: EXEMPT bugfix
Test: adb bugreport
Change-Id: Iad834da84026ee528e28f666f0abd44d941077e7