[mlir][bazel] fixes for 18cf1cd

Author: cota

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

@@ -439,6 +439,7 @@ mlir_c_api_cc_library(
         ":IR",
         ":Pass",
         ":Support",
+        ":config",
         "//llvm:Support",
     ],
     includes = ["include"],
@@ -1009,6 +1010,7 @@ cc_library(
         ":CAPIInterfaces",
         ":MLIRBindingsPythonHeadersAndDeps",
         ":Support",
+        ":config",
         "//llvm:Support",
         "@local_config_python//:python_headers",
         "@pybind11",