Add policies for new services.

Bug: 30989383
Bug: 34731101
Test: manual
Change-Id: Icf9d48568b505c6b788f2f5f456f2d709969fbeb
diff --git a/private/service_contexts b/private/service_contexts
index 607d12b..3b01c0b 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -152,6 +152,7 @@
 usb                                       u:object_r:usb_service:s0
 user                                      u:object_r:user_service:s0
 vibrator                                  u:object_r:vibrator_service:s0
+virtual_touchpad                          u:object_r:virtual_touchpad_service:s0
 voiceinteraction                          u:object_r:voiceinteraction_service:s0
 vrmanager                                 u:object_r:vr_manager_service:s0
 wallpaper                                 u:object_r:wallpaper_service:s0