[MLIR][MemRef] Add missing #include for FailureOr

[wecing]

Summary

FailureOr was used without including correct headers, so the code only works if the user of Transform.h includes the correct headers first.

mlir/include/mlir/Dialect/MemRef/Transforms/Transforms.h

 //===- Transforms.h - MemRef Dialect transformations ------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 /// This header declares functions that assit transformations in the MemRef
 /// dialect.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef MLIR_DIALECT_MEMREF_TRANSFORMS_TRANSFORMS_H
 #define MLIR_DIALECT_MEMREF_TRANSFORMS_TRANSFORMS_H
 
+#include "mlir/Support/LogicalResult.h"
+
 namespace mlir {
 class RewritePatternSet;
 class RewriterBase;
 
 namespace arith {
 class WideIntEmulationConverter;
 } // namespace arith
 

utils/bazel/llvm-project-overlay/mlir/BUILD.bazel

deps = [
         ":IR",
         ":InferTypeOpInterface",
         ":LoopLikeInterface",
         ":MemRefDialect",
         ":MemRefPassIncGen",
         ":NVGPUDialect",
         ":Pass",
         ":RuntimeVerifiableOpInterface",
+        ":Support",
         ":TensorDialect",
         ":Transforms",
         ":VectorDialect",
         "//llvm:Support",
     ],
 )
 
 td_library(