fs/ntfs3: correctly create symlink for relative path

[ Upstream commit b1e9d894 ]

After applying this patch, could correctly create symlink:

ln -s "relative/path/to/file" symlink

Signed-off-by: Rong Zhang <ulin0208@gmail.com>
[almaz.alexandrovich@paragon-software.com: added cpu_to_le32 macro to
rs->Flags assignment]
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>