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/private/app_neverallows.te b/private/app_neverallows.te
index 16ae1a0..7e14dd4 100644
--- a/private/app_neverallows.te
+++ b/private/app_neverallows.te
@@ -263,6 +263,7 @@
   hal_nfc_hwservice
   hal_oemlock_hwservice
   hal_power_hwservice
+  hal_power_stats_hwservice
   hal_secure_element_hwservice
   hal_sensors_hwservice
   hal_telephony_hwservice