Add incident command and incidentd daemon se policy.

Test: adb shell incident
Bug: 31122534
Change-Id: I4ac9c9ab86867f09b63550707673149fe60f1906
diff --git a/private/service_contexts b/private/service_contexts
index d53ba91..607d12b 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -56,6 +56,7 @@
 hardware                                  u:object_r:hardware_service:s0
 hardware_properties                       u:object_r:hardware_properties_service:s0
 hdmi_control                              u:object_r:hdmi_control_service:s0
+incident                                  u:object_r:incident_service:s0
 inputflinger                              u:object_r:inputflinger_service:s0
 input_method                              u:object_r:input_method_service:s0
 input                                     u:object_r:input_service:s0