[llvm] [Sparc] limit MaxAtomicSizeInBitsSupported to 32 for 32-bit Sparc. (PR #81655)

[Rainer Orth via llvm-commits]

rorth wrote:

Thanks for the quick fix: I'd already started a 2-stage build with the patch last night before going to bed: as expected, the link failure was gone and no regressions.

https://github.com/llvm/llvm-project/pull/81655