This integrates xl2tpd suppport into netifd, based on what I saw for ppp and pptp.
I also changed the init script so that it makes sure that all modules needed for
kernel-mode l2tp support are loaded at the time that xl2tpd is started, as
otherwise xl2tpd falls back into using user-mode l2tp.
Signed-off-by: Daniel Golle <dgolle@allnet.de>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@32563 3c298f89-4303-0410-b956-a3cf2f4a3e73