Fix systemd and rauc dependencies

These packages attempt to manipulate directories/files created by RAUC
and systemd, so let's ensure that they are built in a correct order.

Change-Id: Id51b873bb31a1771d11dc0c13f0208da972dd13f
diff --git a/package/czechlight-cfg-fs/czechlight-cfg-fs.mk b/package/czechlight-cfg-fs/czechlight-cfg-fs.mk
index 9f28965..68efadb 100644
--- a/package/czechlight-cfg-fs/czechlight-cfg-fs.mk
+++ b/package/czechlight-cfg-fs/czechlight-cfg-fs.mk
@@ -1,5 +1,5 @@
 CZECHLIGHT_CFG_FS_INSTALL_IMAGES = YES
-CZECHLIGHT_CFG_FS_DEPENDENCIES = host-e2fsprogs
+CZECHLIGHT_CFG_FS_DEPENDENCIES = host-e2fsprogs systemd
 
 CZECHLIGHT_CFG_FS_LOCATION = $(BINARIES_DIR)/cfg.ext4