[llvm] [ELF] Add CPU name detection for CUDA architectures (PR #75964)

[Joseph Huber via llvm-commits]

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@@ -517,6 +519,73 @@ StringRef ELFObjectFileBase::getAMDGPUCPUName() const {
   }
 }
 
+StringRef ELFObjectFileBase::getNVPTXCPUName() const {
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jhuber6 wrote:

I wasn't sure which to call it. AMDGPU calls everything `processor` so I copied the format for the name here.

https://github.com/llvm/llvm-project/pull/75964