[llvm] [nfc][ctx_prof] Factor the callsite instrumentation exclusion criteria (PR #108471)

[Teresa Johnson via llvm-commits]

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@@ -250,6 +250,25 @@ define void @no_counters() {
   call void @bar()
   ret void
 }
+
+define void @inlineasm() {
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teresajohnson wrote:

But isn't the "llvm.instrprof.increment" instrumentation? Oh I see we are looking to make sure there is no "llvm.instrprof.callsite" instrumentation, right? Maybe just mention that.

https://github.com/llvm/llvm-project/pull/108471