[mlir][bazel] Fix after ef8c26b

Author: chsigg

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

@@ -232,6 +232,10 @@ cc_test(
         "//llvm:TestingSupport",
         "//mlir:FuncDialect",
         "//mlir:IR",
+        "//mlir:MlirOptLib",
+        "//mlir:Parser",
+        "//mlir:Pass",
+        "//mlir:Support",
         "//mlir:TransformDialect",
         "//mlir:TransformDialectTransforms",
         "//third-party/unittest:gtest",