tee.te: set persist_data_path permission

DRM needs rw permission to access /persist/data/

Bug: 15989260
Change-Id: I4af212551c8a0db8491ab161d41e24a7d7a3f688
diff --git a/sepolicy/tee.te b/sepolicy/tee.te
index d14b864..70ca62a 100644
--- a/sepolicy/tee.te
+++ b/sepolicy/tee.te
@@ -10,5 +10,8 @@
 allow tee drm_data_file:file create_file_perms;
 
 # Read from persist partition
-allow tee persist_file:dir search;
+allow tee persist_file:dir r_dir_perms;
 r_dir_file(tee, persist_data_file)
+# Write to drm related pieces of persist partition
+allow tee persist_data_file:dir create_dir_perms;
+allow tee persist_data_file:file create_file_perms;