Get rid of all the places the acenic driver could print "eth%d" because
the device hasn't been registered yet.  Use the method of having a name pointer
in the private device structure that changes from pci_name() to dev->name.
There was already a field named 'name[]' in the private data structure, but
it was set and never used!

Use netdev_priv(dev) rather than dev->priv as well.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>