sepolicy: Fix class* property trigger denial

Change-Id: If22f46b9bc8b3acd80c83e98de84cd77b34157a1
diff --git a/sepolicy/init.te b/sepolicy/init.te
index 447c720..eaf9cae 100644
--- a/sepolicy/init.te
+++ b/sepolicy/init.te
@@ -2,3 +2,6 @@
 allow init block_device:dir search;
 allow init userdata_block_device:blk_file rw_file_perms;
 allow init cache_block_device:blk_file rw_file_perms;
+
+# Allow init to send class_* trigger events
+allow init property_socket:sock_file write;