systemd: Minimize udev package size if DISTRO_FEATURES doen't contain sysvinit
Link udev shared with systemd helper to minimize the udev package size
if DISTRO_FEATURES doesn't configure sysvinit to be used.
It is only usefull to link udev static with systemd helper if udev
should be installed without systemd such as a mixed sysvinit and systemd environment
[RP: Fixed to use sysvinit distro feature instead of systemd] Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
