staging: fsl-dpaa2/eth: Don't use netdev_err too early

Early during probe the netdevice name is not initialized yet,
so use dev_err instead of netdev_err when printing error
messages.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>