udev: skip in systemd distros, to fix world builds

(From OE-Core rev: 1179e43d67c96367480e563a36684d550d83fcbe)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/udev/udev.inc

@@ -99,3 +99,9 @@ do_install_append () {
 
 	echo 'udev_run="/var/run/udev"' >> ${D}${sysconfdir}/udev/udev.conf
 }
+
+# As systemd also builds udev, skip this package if we're doing a systemd build.
+python () {
+    if oe.utils.contains ('DISTRO_FEATURES', 'systemd', True, False, d):
+        raise bb.parse.SkipPackage("'systemd' in DISTRO_FEATURES")
+}