storaged: allow register and callback from batteryproperties

Test: adb shell dumpsys storaged
Bug: 33086174
Bug: 34198239
Change-Id: I85d6bd05192a205662f69466d7d6208e8b834eff

private/healthd.te

 # type_transition must be private policy the domain_trans rules could stay
 # public, but conceptually should go with this
 init_daemon_domain(healthd)
+
+# Allow callback to storaged batteryproperties listener
+binder_call(healthd, storaged)

private/storaged.te

@@ -29,6 +29,10 @@ add_service(storaged, storaged_service)
 binder_use(storaged)
 binder_call(storaged, system_server)
 
+# use batteryproperties service
+allow storaged batteryproperties_service:service_manager find;
+binder_call(storaged, healthd)
+
 ###
 ### neverallow
 ###