Add incident command and incidentd daemon se policy.

Test: adb shell incident
Bug: 31122534
Change-Id: I4ac9c9ab86867f09b63550707673149fe60f1906
diff --git a/private/system_app.te b/private/system_app.te
index 66c1e4d..7539da2 100644
--- a/private/system_app.te
+++ b/private/system_app.te
@@ -51,6 +51,9 @@
 # Settings need to access app name and icon from asec
 allow system_app asec_apk_file:file r_file_perms;
 
+# Allow system apps to interact with incidentd
+binder_call(system_app, incidentd)
+
 allow system_app servicemanager:service_manager list;
 # TODO: scope this down? Too broad?
 allow system_app { service_manager_type -netd_service -dumpstate_service -installd_service }:service_manager find;