cavium: thunder: Remove duplicate "netdev->name" logging output

Using netdev_<level>(netdev, "%s: ...", netdev->name) duplicates the
name in the output.  Remove those uses.

Miscellanea:

o Use the netif_<level> convenience macros at the same time

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>