This makes the symbolic link portable with the dated zip file, otherwise
the link still points to the original deploy directory.
(From OE-Core rev: 0fc83102eeb48b85027c5b1202d8a584f51679a7)
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>