Add SEPolicy for new Java-based Broadcast Radio service.

Bug: b/36863239
Test: manual
Change-Id: I7e929926efbb1570ea9723ef3810a511c71dc11a

private/service_contexts

@@ -16,6 +16,7 @@ batterystats                              u:object_r:batterystats_service:s0
 battery                                   u:object_r:battery_service:s0
 bluetooth_manager                         u:object_r:bluetooth_manager_service:s0
 bluetooth                                 u:object_r:bluetooth_service:s0
+broadcastradio                            u:object_r:broadcastradio_service:s0
 carrier_config                            u:object_r:radio_service:s0
 clipboard                                 u:object_r:clipboard_service:s0
 com.android.net.IProxyService             u:object_r:IProxyService_service:s0

public/service.te

@@ -43,6 +43,7 @@ type backup_service, app_api_service, ephemeral_app_api_service, system_server_s
 type batterystats_service, app_api_service, ephemeral_app_api_service, system_server_service, service_manager_type;
 type battery_service, system_server_service, service_manager_type;
 type bluetooth_manager_service, app_api_service, ephemeral_app_api_service, system_server_service, service_manager_type;
+type broadcastradio_service, system_server_service, service_manager_type;
 type cameraproxy_service, system_server_service, service_manager_type;
 type clipboard_service, app_api_service, ephemeral_app_api_service, system_server_service, service_manager_type;
 type contexthub_service, app_api_service,  system_server_service, service_manager_type;