netmgrd: allow netmgrd to acquire wakelock

Add policies to allow netmgrd to acquire and
release wakelocks.

Fix the following denials

avc: denied { read write } for comm="netmgrd" name="wake_lock"
dev="sysfs" ino=77 scontext=u:r:netmgrd:s0 tcontext=u:
object_r:sysfs_wake_lock:s0 tclass=file permissive=0

avc: denied { block_suspend } for pid=1073 comm="netmgrd"
capability=36 scontext=u:r:netmgrd:s0 tcontext==u:
r:netmgrd:s0 tclass=capability2 permissive=0

Bug: 24546055

Change-Id: I13fae2bcb5836761c72cab0d6e1266116666c41e
diff --git a/sepolicy/netmgrd.te b/sepolicy/netmgrd.te
index 3da9fba..9d3c5d3 100644
--- a/sepolicy/netmgrd.te
+++ b/sepolicy/netmgrd.te
@@ -59,3 +59,6 @@
 
 # execute toybox/toolbox
 allow netmgrd toolbox_exec:file rx_file_perms;
+
+#Allow netmgrd to use wakelock
+wakelock_use(netmgrd)