systemd has a build-dependency on util-linux for libmount, and util-linux has an
optional build dependency on systemd.
The features in util-linux that enabling systemd gives you are:
* lslogins can show recent journal entries from the user
* uuidd can use socket activation and has a service file
* fstrim has a service file
* logger can write journal entries
These are not worth the overhead of maintaining two util-linux recipes to
bootstrap the cycle, so disable systemd support in util-linux.
Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>