[flang][NFC] Fix include style (llvm#85655)

Author: clementval

flang/lib/Optimizer/CodeGen/CodeGen.cpp

@@ -37,6 +37,7 @@
 #include "mlir/Conversion/VectorToLLVM/ConvertVectorToLLVM.h"
 #include "mlir/Dialect/Arith/IR/Arith.h"
 #include "mlir/Dialect/DLTI/DLTI.h"
+#include "mlir/Dialect/LLVMIR/LLVMAttrs.h"
 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
 #include "mlir/Dialect/LLVMIR/Transforms/AddComdats.h"
 #include "mlir/Dialect/OpenACC/OpenACC.h"
@@ -49,7 +50,6 @@
 #include "mlir/Target/LLVMIR/ModuleTranslation.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/TypeSwitch.h"
-#include <mlir/Dialect/LLVMIR/LLVMAttrs.h>
 
 namespace fir {
 #define GEN_PASS_DEF_FIRTOLLVMLOWERING