Always include net/ethernet.h instead linux specific headers,
fixes compilation with musl libc.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

Removed the PKG_CHECK_FORMAT_SECURITY line

Set format security back to default value

alsa-lib
glib2
libffi
libsndfile
libtorrent
speex
tcp_wrappers
etherwake
git
nfs-kernel-server
portmap
rtorrent

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Etienne CHAMPETIER <etienne.champetier@free.fr>