[llvm] [AMDGPU] Add target feature require-naturally-aligned-buffer-access (PR #115479)

[Piotr Sobczak via llvm-commits]

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@@ -600,6 +601,10 @@ class GCNSubtarget final : public AMDGPUGenSubtargetInfo,
     return UnalignedAccessMode;
   }
 
+  bool requiresNaturallyAlignedBufferAccess() const {
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piotrAMD wrote:

Done.

https://github.com/llvm/llvm-project/pull/115479