[lld] [LLD][ARM] Allow R_ARM_SBREL32 relocations in debug info (PR #116956)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-x86_64-debian-dylib` running on `gribozavr4` while building `lld` at step 8 "test-build-unified-tree-check-lld".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/60/builds/13604

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

```
Step 8 (test-build-unified-tree-check-lld) failure: 1200 seconds without output running [b'ninja', b'check-lld'], attempting to kill
...
PASS: lld :: wasm/why-extract.s (3004 of 3014)
PASS: lld :: MachO/stabs.s (3005 of 3014)
PASS: lld :: wasm/lto/thinlto.ll (3006 of 3014)
PASS: lld :: MachO/arm64-thunks.s (3007 of 3014)
PASS: lld :: wasm/lto/thinlto-index-only.ll (3008 of 3014)
PASS: lld :: wasm/libsearch.s (3009 of 3014)
PASS: lld :: MachO/order-file.s (3010 of 3014)
PASS: lld :: MachO/weak-definition-direct-fetch.s (3011 of 3014)
PASS: lld :: ELF/relocatable-many-sections.s (3012 of 3014)
PASS: lld :: MinGW/driver.test (3013 of 3014)
command timed out: 1200 seconds without output running [b'ninja', b'check-lld'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1212.975200

```

</details>

https://github.com/llvm/llvm-project/pull/116956