There's no need to chdir() when creating image symlinks, and using chdir()
changes the state for future tasks.
(From OE-Core rev: 2fdf06fbe986d742f6bb13e9348b50e9aab03139)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>