[Lldb-commits] [lldb] Reland "[lldb][RPC] Upstream lldb-rpc-gen tool" (#146969)" Attempt 2 (PR #148996)

[LLVM Continuous Integration via lldb-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `cross-project-tests-sie-ubuntu-dwarf5` running on `doug-worker-1b` while building `lldb` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/163/builds/23378

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
ninja: error: 'include/lldb/SBDefines.h', needed by 'tools/lldb/tools/lldb-rpc/DerivedHeaders/SBDefines.h', missing and no known rule to make it

```

</details>

https://github.com/llvm/llvm-project/pull/148996