Directory for vold to store private data.

Creates new directory at /data/misc/vold for storing key material
on internal storage.  Only vold should have access to this label.

Change-Id: I7f2d1314ad3b2686e29e2037207ad83d2d3bf465
diff --git a/file_contexts b/file_contexts
index 92b8d32..e20638e 100644
--- a/file_contexts
+++ b/file_contexts
@@ -236,6 +236,7 @@
 /data/misc/wifi/sockets/wpa_ctrl.*   u:object_r:system_wpa_socket:s0
 /data/misc/wifi/hostapd(/.*)?   u:object_r:wpa_socket:s0
 /data/misc/zoneinfo(/.*)?       u:object_r:zoneinfo_data_file:s0
+/data/misc/vold(/.*)?           u:object_r:vold_data_file:s0
 
 # Bootchart data
 /data/bootchart(/.*)?		u:object_r:bootchart_data_file:s0