unfs3: fix symlink time setting issue

unfs3: fix symlink time setting issue

Add back the dropped 0001-attr-fix-utime-for-symlink.patch
to fix symlink time setting issue on NFS.

The problem could be reproduced by runing the following command
on nfs booted qemu:

  ln -s dest src && touch -h src

Apart from the rpm operations mentioned in the original patch,
'docker pull' also fails with a 'stale file' error. The common
pattern here is extracting files from a bundle and setting times
for them.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>