aquantia: Fix driver name reported by ethtool

V2: using "aquantia" subsystem tag.

The command "ethtool -i ethX" should display driver name (driver: atlantic)
instead vendor name (driver: aquantia).

Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>