Merge changes Id4ac3552,I2068f6f4

* changes:
  Allow sensor hal to use wakelock
  Allow sensor to use gralloc handle and access ion device

vendor/hal_sensors_default.te

@@ -5,3 +5,12 @@ type hal_sensors_default_exec, exec_type, vendor_file_type, file_type;
 init_daemon_domain(hal_sensors_default)
 
 allow hal_sensors_default fwk_scheduler_hwservice:hwservice_manager find;
+
+# Allow sensor hals to access and use gralloc memory allocated by
+# android.hardware.graphics.allocator
+allow hal_sensors_default hal_graphics_allocator_default:fd use;
+allow hal_sensors_default ion_device:chr_file r_file_perms;
+
+# allow sensor hal to use lock for keeping system awake for wake up
+# events delivery.
+wakelock_use(hal_sensors_default);