[llvm] [AMDGPU] MCExpr-ify MC layer kernel descriptor (PR #80855)

[Matt Arsenault via llvm-commits]

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@@ -39,12 +39,12 @@
 // OBJDUMP-NEXT: 0080 00000000 00000000 00000000 00000000
 // OBJDUMP-NEXT: 0090 00000000 00000000 00000000 00000000
 // OBJDUMP-NEXT: 00a0 00000000 00000000 00000000 00000000
-// OBJDUMP-NEXT: 00b0 00000060 80000000 00000000 00000000
+// OBJDUMP-NEXT: 00b0 00000060 80000000 00040000 00000000
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arsenm wrote:

This probably shouldn't have changed? 

https://github.com/llvm/llvm-project/pull/80855