[clang] [llvm] [RISCV] Bump Zaamo and Zalrsc to version 1.0 (PR #91556)

[Brandon Wu via cfe-commits]

4vtomat wrote:

> Need to update RISCVUsage.rst and ReleaseNotes.rst

Is it going to be cherry-picked to release branch?

https://github.com/llvm/llvm-project/pull/91556