[llvm] AMDGPU: Use defset to cleanup marking MFMA intrinsics as divergent (PR #85915)

[Stanislav Mekhanoshin via llvm-commits]

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@@ -2653,6 +2653,8 @@ class AMDGPUWmmaIntrinsicIU<LLVMType AB, LLVMType CD> :
 // The OPSEL intrinsics read from and write to one half of the registers, selected by the op_sel bit.
 // The tied versions of the f16/bf16 wmma intrinsics tie the destination matrix registers to the input accumulator registers.
 // The content of the other 16-bit half is preserved from the input.
+
+defset list<Intrinsic> AMDGPUMFMAIntrinsicsGFX11 = {
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rampitec wrote:

This is WMMA, not MFMA. Defset name is wrong. Same for GFX12.

https://github.com/llvm/llvm-project/pull/85915