[llvm] [AMDGPU][MC] Support UC_VERSION_* constants. (PR #95618)

[Matt Arsenault via llvm-commits]

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@@ -669,5 +669,18 @@ const char* const IdSymbolic[] = {
 
 } // namespace VGPRIndexMode
 
+namespace UCVersion {
+
+ArrayRef<GFXVersion> getGFXVersions() {
+  static const GFXVersion Versions[] = {{"UC_VERSION_GFX7", 0},
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arsenm wrote:

Can you add a comment for this 

https://github.com/llvm/llvm-project/pull/95618