package/libnet: add LIBNET_CONFIG_SCRIPTS
Set LIBNET_CONFIG_SCRIPTS to libnet-config to fix a build failure with
syslog-ng and libnet in version 1.2 due to -L$(libdir) which has been
added with
https://github.com/libnet/libnet/commit/6859d1f198f97aad129c54fcd156700a9178204e
Fixes:
- http://autobuild.buildroot.org/results/45e517401d14e304e9c6c990f1b4ead92c850ba2
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>