Add netconf.h for use by iproute2.
Signed-off-by: Stephen Hemminger <redacted>
--- a/include/uapi/linux/Kbuild 2012-10-25 09:11:15.499273810 -0700
+++ b/include/uapi/linux/Kbuild 2012-12-12 08:56:36.130263710 -0800
@@ -258,6 +258,7 @@ header-y += neighbour.h
header-y += net.h
header-y += net_dropmon.h
header-y += net_tstamp.h
+header-y += netconf.h
header-y += netdevice.h
header-y += netfilter.h
header-y += netfilter_arp.h