net/ifconfig, net/iproute: need sysfs

sysfs needs to be available before we can check interfaces. On udev
systems this was not a problem, but with mdev/static-dev, there is no
other need for sysfs until later in the init.

X-Gentoo-Bug: 410701
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=410701
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

net/ifconfig.sh.Linux.in

@@ -5,6 +5,9 @@ ifconfig_depend()
 {
 	program /sbin/ifconfig /bin/ifconfig
 	provide interface
+	case "${IFACE}" in
+		lo|lo0) need sysfs ;;
+	esac
 }
 
 _up()

net/iproute2.sh

@@ -6,6 +6,9 @@ iproute2_depend()
 	program ip
 	provide interface
 	after ifconfig
+	case "${IFACE}" in
+		lo|lo0) need sysfs ;;
+	esac
 }
 
 _up()