When the libxcrypt version is updated, libxcrypt-compat is omitted.
(From OE-Core rev: a353882899da414b109acbb3b7882239265fe248)
Signed-off-by: Zheng Ruoqin <zhengrq.fnst@cn.fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>