Add vndservicemanager.

vndservicemanager is the context manager for
binder services that are exclusively used from
the vendor binder domain, "/dev/vndbinder";
these services can only be registered and accessed
by vendor processes.

To facilitate code re-use, vndservicemanager
is just framework servicemanager accessing the
vendor binder devnode.

Bug: 36052864
Test: modified binder_test to use /dev/vndbinder

Change-Id: Iac19a1180321a5be78d7be5ceb4ba211c593dc47
diff --git a/cmds/servicemanager/vndservicemanager.rc b/cmds/servicemanager/vndservicemanager.rc
new file mode 100644
index 0000000..d5ddaaf
--- /dev/null
+++ b/cmds/servicemanager/vndservicemanager.rc
@@ -0,0 +1,6 @@
+service vndservicemanager /vendor/bin/vndservicemanager /dev/vndbinder
+    class core
+    user system
+    group system readproc
+    writepid /dev/cpuset/system-background/tasks
+