[llvm] [AMDGPU]: Rewrite mbcnt_lo/mbcnt_hi to work item ID where applicable (PR #160496)

[Jay Foad via llvm-commits]

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@@ -15,6 +15,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "AMDGPUInstrInfo.h"
+#include "AMDGPUSubtarget.h"
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jayfoad wrote:

You don't need this. It's implied by GCNSubtarget.h.

https://github.com/llvm/llvm-project/pull/160496