Rollup merge of rust-lang#150394 - DKLoehr:passplugin, r=nikic

Accommodate LLVM PassPlugin rename

LLVM [recently moved](llvm/llvm-project#173279) their `PassPlugin` files to a new folder. This PR updates our `PassWrapper` to point to the new location.

Author: JonathanBrouwer

compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp

@@ -23,7 +23,11 @@
 #include "llvm/MC/TargetRegistry.h"
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/Passes/PassBuilder.h"
+#if LLVM_VERSION_GE(22, 0)
+#include "llvm/Plugins/PassPlugin.h"
+#else
 #include "llvm/Passes/PassPlugin.h"
+#endif
 #include "llvm/Passes/StandardInstrumentations.h"
 #include "llvm/Support/CBindingWrapping.h"
 #include "llvm/Support/FileSystem.h"