[llvm] Improving ThinLTO error message for inline assembly errors (PR #102211)

[via llvm-commits]

HighW4y2H3ll wrote:

Finally got the testcase passed! It's now printing the error message like this:
```
ld.lld: error: test.o test.cpp:3:16: <inline asm>:1:14: unknown token in expression
        BAD SYNTAX$%
                    ^
```
Any feedbacks would be appreciated! @MaskRay 

https://github.com/llvm/llvm-project/pull/102211