tmpfiles: Split networkd entries into a separate file

Many distributions ship systemd-networkd as a separate file so we
need to be able to ship the tmpfiles networkd entries as part of
that separate networkd package. Let's split the networkd entries
into a separate file to make that possible.

tmpfiles.d/meson.build

@@ -13,6 +13,7 @@ files = [['README',               ''],
          ['systemd-pstore.conf',  'ENABLE_PSTORE'],
          ['tmp.conf',             ''],
          ['x11.conf',             ''],
+         ['systemd-network.conf', 'ENABLE_NETWORKD'],
         ]
 
 foreach pair : files

tmpfiles.d/systemd-network.conf

@@ -0,0 +1,13 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+
+# See tmpfiles.d(5) for details
+
+d /run/systemd/netif 0755 systemd-network systemd-network -
+d /run/systemd/netif/links 0755 systemd-network systemd-network -
+d /run/systemd/netif/leases 0755 systemd-network systemd-network -
+d /run/systemd/netif/lldp 0755 systemd-network systemd-network -

tmpfiles.d/systemd.conf.in

@@ -18,12 +18,6 @@ d /run/systemd/sessions 0755 root root -
 d /run/systemd/users 0755 root root -
 d /run/systemd/machines 0755 root root -
 d /run/systemd/shutdown 0755 root root -
-{% if ENABLE_NETWORKD %}
-d /run/systemd/netif 0755 systemd-network systemd-network -
-d /run/systemd/netif/links 0755 systemd-network systemd-network -
-d /run/systemd/netif/leases 0755 systemd-network systemd-network -
-d /run/systemd/netif/lldp 0755 systemd-network systemd-network -
-{% endif %}
 
 d /run/log 0755 root root -