Add sepolicy for app hibernation system service

Add selinux policy so the app hibernation system service can be accessed
by other processes/apps.

Bug: 175829330
Test: builds
Change-Id: I96ea9dd977ec007bc11560601554547749b4df03
diff --git a/private/service_contexts b/private/service_contexts
index dd27bcf..d09c76d 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -31,6 +31,7 @@
 android.service.gatekeeper.IGateKeeperService    u:object_r:gatekeeper_service:s0
 android.system.keystore2                  u:object_r:keystore_service:s0
 app_binding                               u:object_r:app_binding_service:s0
+app_hibernation                           u:object_r:app_hibernation_service:s0
 app_integrity                             u:object_r:app_integrity_service:s0
 app_prediction                            u:object_r:app_prediction_service:s0
 app_search                                u:object_r:app_search_service:s0