drivers/net/chelsio: Use pr_<level>, netif_msg_<type>

Convert CH_<level> and CH_DBG uses to pr_<level> and netif equivalents
Remove CH_<level> and CH_DBG macro definitions

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