[clang] [llvm] [RISCV] Support Zama16b1p0 (PR #88474)

[Kito Cheng via cfe-commits]

================
@@ -119,6 +119,7 @@ on support follow.
      ``Za128rs``       Supported (`See note <#riscv-profiles-extensions-note>`__)
      ``Za64rs``        Supported (`See note <#riscv-profiles-extensions-note>`__)
      ``Zacas``         Supported (`See note <#riscv-zacas-note>`__)
+     ``Zama16b``       Supported
----------------
kito-cheng wrote:

```suggestion
     ``Zama16b``       Supported (`See note <#riscv-profiles-extensions-note>`__)
```

https://github.com/llvm/llvm-project/pull/88474