[clang] [llvm] [MIPS] Add MIPS i6400 and i6500 processors (PR #130587)

[Brad Smith via cfe-commits]

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@@ -101,6 +101,8 @@ Changes to the LoongArch Backend
 Changes to the MIPS Backend
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+* `-mcpu=i6400` and `-mcpu=i6500` was added.
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brad0 wrote:

Were instead of was.

https://github.com/llvm/llvm-project/pull/130587