[clang] [Clang][ARM] Only try to redefine builtins for non-CUDA (PR #128222)

[Nick Sarnie via cfe-commits]

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@@ -27,6 +27,8 @@
 extern "C" {
 #endif
 
+#if !defined(__CUDA_ARCH__)
+
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sarnex wrote:

@rnk Ping on this, thx!

https://github.com/llvm/llvm-project/pull/128222