sepolicy: Allow vold to create tmpfs files for asec containers

Change-Id: Ic8f1641928840774204099453b74dc1b52b3c6f8
diff --git a/sepolicy/vold.te b/sepolicy/vold.te
index acdc7af..9b7313c 100644
--- a/sepolicy/vold.te
+++ b/sepolicy/vold.te
@@ -2,6 +2,7 @@
 
 # Allow vold to manage ASEC
 allow vold sdcard_external:file create_file_perms;
+allow vold vold_tmpfs:file create_file_perms;
 
 # Allow vold to access fuse for fuse-based fs
 allow vold fuse_device:chr_file rw_file_perms;