[llvm] [RISCV] Simplify fixup kinds that force relocations (PR #136088)

[Mariusz Borsa via llvm-commits]

wrotki wrote:

Perhaps this PR wasn't a change (it's only touching RISCV things), but this [commit](https://github.com/llvm/llvm-project/commit/40789ce7f1b7cff6de82b7f93db25a8c54194d46#diff-1e19a0e301827c46da59a2d953a31d5a51097b1c3392db3398becf7ceeca061a) is more suspect - it touches the mcfixup header and some AArch64 specific files too.



https://github.com/llvm/llvm-project/pull/136088