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

[Mariusz Borsa via llvm-commits]

wrotki wrote:

This breaks our internal builds, when building llvm-project/llvm/lib/Demangle/ItaniumDemangle.cpp, with:

error: ADR/ADRP relocations must be GOT relative
error: unknown AArch64 fixup kind!
30 warnings and 2 errors generated.



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