sepolicy: allow vold to trim persist

Change-Id: I6441c00bfd173f1f3fd4c09a67c678c5bd4f8090
Issue-id: SYSTEMS-62
diff --git a/sepolicy/qcom/vold.te b/sepolicy/qcom/vold.te
new file mode 100644
index 0000000..9893108
--- /dev/null
+++ b/sepolicy/qcom/vold.te
@@ -0,0 +1 @@
+allow vold persist_file:dir { getattr read open ioctl };