Fix missing dependency on systemd

Change-Id: I4ca5de1fe5f3e69d03bb741a027aee2e97b53b18
diff --git a/package/cla-sysrepo/Config.in b/package/cla-sysrepo/Config.in
index 3289f80..80e5955 100644
--- a/package/cla-sysrepo/Config.in
+++ b/package/cla-sysrepo/Config.in
@@ -4,5 +4,6 @@
 	select BR2_PACKAGE_DOCOPT_CPP
 	select BR2_PACKAGE_SPDLOG
 	select BR2_PACKAGE_NETSNMP
+	select BR2_PACKAGE_SYSTEMD
 	help
 	  Control CzechLight devices over YANG with sysrepo