edev was allocated using malloc. On one board (NOR boot), we met data abort
in eth_register (at dev_add_param(dev, &edev->param_ip);).
Allocating edev with xzalloc (as in several other drivers) fixed the problem.
Signed-off-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>