vnc: Add system-level integration

 * RC script, included automatically when added to PRODUCT_PACKAGES
 * SELinux policy, add to BOARD_SEPOLICY_DIRS
 * Disable spammy debug output
diff --git a/etc/vncflinger.rc b/etc/vncflinger.rc
new file mode 100644
index 0000000..7d70f26
--- /dev/null
+++ b/etc/vncflinger.rc
@@ -0,0 +1,11 @@
+service vncflinger /system/bin/vncflinger
+    class late_start
+    disabled
+    user system
+    group system input inet readproc
+
+on property:persist.vnc.enable=true
+    start vncflinger
+
+on property:persist.vnc.enable=false
+    stop vncflinger