Add power.stats HAL 1.0 sepolicy

Also giving statsd permission to access it. This change copies the internal sepolicy to AOSP.

Bug: 111185513
Bug: 120551881
Test: make
Change-Id: I7e0386777e05580299caf9b97cb7804459f1a9d0
diff --git a/public/hal_power_stats.te b/public/hal_power_stats.te
new file mode 100644
index 0000000..2c04008
--- /dev/null
+++ b/public/hal_power_stats.te
@@ -0,0 +1,5 @@
+# HwBinder IPC from client to server, and callbacks
+binder_call(hal_power_stats_client, hal_power_stats_server)
+binder_call(hal_power_stats_server, hal_power_stats_client)
+
+hal_attribute_hwservice(hal_power_stats, hal_power_stats_hwservice)