i.MX233 in OLinuXino uses LAN9512 for Ethernet connection.
LAN9512 is connected to USB. Execute usb command before bringing
network up.
This patch makes 'ifup eth0' workable.
Signed-off-by: Dmitry Voytik <voytikd@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>