[MLIR/linalg] Update arg name of generalizeNamedOp in Transforms.h (llvm#123679)

`Generalization.cpp:53`
```cpp
FailureOr<GenericOp> mlir::linalg::generalizeNamedOp(RewriterBase &rewriter,
                                                     LinalgOp linalgOp) {
  if (failed(generalizeNamedOpPrecondition(linalgOp)))
    return rewriter.notifyMatchFailure(linalgOp, "preconditions not met");

  SmallVector<Value> inputs = linalgOp.getDpsInputs();
  ValueRange outputs = linalgOp.getDpsInits();
  SmallVector<AffineMap> indexingMaps = linalgOp.getIndexingMapsArray();
  SmallVector<utils::IteratorType> iterators = linalgOp.getIteratorTypesArray();
  SmallVector<Type> resultTypes = linalgOp.hasPureTensorSemantics()
                                      ? TypeRange(ValueRange(outputs))
                                      : TypeRange{};
...
```

`generalizeNamedOp` in `Generalization.cpp` has a different arg name
than `generalizeNamedOp` in `Transforms.h`

Sync to use `linalgOp`

Author: ita9naiwa

mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h

@@ -699,11 +699,11 @@ FailureOr<GenericOp> interchangeGenericOp(RewriterBase &rewriter,
                                           GenericOp genericOp,
                                           ArrayRef<unsigned> interchangeVector);
 
-/// Create a GenericOp from the given named operation `namedOp` and replace
-/// namedOp.
-/// Return failure if `namedOp` is a GenericOp or misses a region builder.
+/// Create a GenericOp from the given named operation `linalgOp` and replace
+/// the given `linalgOp`.
+/// Return failure if `linalgOp` is a GenericOp or misses a region builder.
 FailureOr<GenericOp> generalizeNamedOp(RewriterBase &rewriter,
-                                       LinalgOp namedOp);
+                                       LinalgOp linalgOp);
 
 /// Create a namedOp from the given GenericOp and replace the GenericOp.
 /// Currently we can specialize only trivial linalg copy operations.