pcnet_cs: Use proper netdev_*-printouts

To prevent broken messages like:

[  204.024291] eth%d: pcnet_reset_8390() did not complete.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>