systemd-resolved build fails without gcrypt PACKAGECONFIG. Backport the fix.
Also remove the comment about resolved's dependence on gcrypt.
[YOCTO #9219]
(From OE-Core rev: 5ba3115a699357a5d272836b7edf883753a551d0)
Signed-off-by: Maxin B. John <maxin.john@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>