[clang] [llvm] [RISCV] Support `svukte` extension (PR #115657)

[Craig Topper via cfe-commits]

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@@ -158,6 +158,7 @@ on support follow.
      ``Svinval``       Assembly Support
      ``Svnapot``       Assembly Support
      ``Svpbmt``        Supported
+     ``Svukte``        Supported
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topperc wrote:

This should be in the experimental section with the link to the spec.

https://github.com/llvm/llvm-project/pull/115657