[llvm] [AMDGPU] Enable co-exec scheduler for gfx950. (PR #193713)

[Matt Arsenault via llvm-commits]

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@@ -600,11 +600,13 @@ StringRef llvm::AMDGPU::getSchedStrategy(const Function &F) {
 static void
 diagnoseUnsupportedCoExecSchedulerSelection(const Function &F,
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arsenm wrote:

This looks like an artificial restriction which shouldn't exist 

https://github.com/llvm/llvm-project/pull/193713