[llvm] [SPARC][IAS] Emit the correct 32-bit ELF machine type (PR #96583)

[John Paul Adrian Glaubitz via llvm-commits]

glaubitz wrote:

Unit test looks good to me as well. I would prefer squashing the two additional commits into the original commits though since the test belongs to the change.

https://github.com/llvm/llvm-project/pull/96583