[llvm] [Hexagon][llvm-objdump] Fix crash at a truncated instruction (PR #142082)

[Sudharsan Veeravalli via llvm-commits]

svs-quic wrote:

> `LLVM :: tools/llvm-dwarfdump/X86/debug_info_crel.yaml` -- this failure, is it on the baseline? Or could it be related to this change?

I think it is on the baseline. The changes in this patch are to a Hexagon specific part of the code and should not be affecting other targets.

https://github.com/llvm/llvm-project/pull/142082