[llvm] [CodeGen][ExpandIRInsts] NFC: cleanup style. (PR #194978)

[Rahul Joshi via llvm-commits]

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@@ -45,12 +45,12 @@
 #include "llvm/IR/PassManager.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
+#include "llvm/Support/Casting.h"
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jurahul wrote:

nvm: I read it the reverse :) 

https://github.com/llvm/llvm-project/pull/194978