bundle init.rc contents with its service

Bug: 23186545
Change-Id: Ib17b91477ff9c5c8bce45a832e1312d7ec0322de
diff --git a/mtpd.rc b/mtpd.rc
new file mode 100644
index 0000000..ff2d311
--- /dev/null
+++ b/mtpd.rc
@@ -0,0 +1,7 @@
+service mtpd /system/bin/mtpd
+    class main
+    socket mtpd stream 600 system system
+    user vpn
+    group vpn net_admin inet net_raw
+    disabled
+    oneshot