FileSystemPermissionTest: Add /data/preinstall_md5

http://rootzwiki.com/topic/29930-new-root-method-for-stock-234-621622-found-droid2-r2d2/

(cherry picked from commit ab2201332ed598bc692de374c45d8fc85fe2632c)

Change-Id: Ic0d75a77419a701a58bd2d29953fa897e47f96f0
1 file changed