[llvm] [SPARC] Update the list of ELF relocation types (PR #137916)

[Fangrui Song via llvm-commits]

MaskRay wrote:

(Still on a trip with limited computer access)

We need a llvm-readobj test. You can git log how I update the ELF relocation types with accompanying test/tools/llvm-readobj tests.

https://github.com/llvm/llvm-project/pull/137916