Enable the TimeZoneManagerService

Add policy changes to enable a new service. The service
is currently switched off in config, but this change is
needed before it could be enabled.

Bug: 31008728
Test: make droid
Merged-In: I29c4509304978afb2187fe2e7f401144c6c3b4c6
Change-Id: I29c4509304978afb2187fe2e7f401144c6c3b4c6
diff --git a/private/service_contexts b/private/service_contexts
index 8be98e9..8a4650e 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -147,6 +147,7 @@
 telephony.registry                        u:object_r:registry_service:s0
 textclassification                        u:object_r:textclassification_service:s0
 textservices                              u:object_r:textservices_service:s0
+timezone                                  u:object_r:timezone_service:s0
 trust                                     u:object_r:trust_service:s0
 tv_input                                  u:object_r:tv_input_service:s0
 uimode                                    u:object_r:uimode_service:s0