Add a rule to make a dir root/vendor in the output

BUG:30040825
Change-Id: I1e06e3f9a981d4817e84b59af46f3c33b8430c02
diff --git a/self-extractors/nvidia/staging/Android.mk b/self-extractors/nvidia/staging/Android.mk
new file mode 100644
index 0000000..e0a24b7
--- /dev/null
+++ b/self-extractors/nvidia/staging/Android.mk
@@ -0,0 +1,17 @@
+# Copyright 2016 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.
+
+ifeq ($(TARGET_DEVICE),dragon)
+$(shell mkdir -p $(TARGET_ROOT_OUT)/vendor)
+endif