[clang] [llvm] [RISCV] Add Smrnmi extension (PR #111668)

[via llvm-commits]

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@@ -129,6 +129,7 @@ on support follow.
      ``Smcdeleg``      Supported
      ``Smcsrind``      Supported
      ``Smepmp``        Supported
+     ``Smrnmi``        Supported
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dong-miao wrote:

Okay, thanks for your help.

https://github.com/llvm/llvm-project/pull/111668