Define kernel path for the x86_64 phone target

Fixes the build.

Bug: 134663723
Change-Id: I44f08889cc5ed51581358c90123d5c1efd77e00a
diff --git a/vsoc_x86_64/device.mk b/vsoc_x86_64/device.mk
new file mode 100644
index 0000000..ed4433a
--- /dev/null
+++ b/vsoc_x86_64/device.mk
@@ -0,0 +1,16 @@
+#
+# Copyright (C) 2019 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+PRODUCT_COPY_FILES += device/google/cuttlefish_kernel/4.14-x86_64/kernel:kernel