net: aquantia: Introduce global AQC hardware reset sequence

The detailed reset sequence ensures all HW components are in aligned
state before NIC startup. It also supports cards with signed firmware (RBL)
and checks if their FW is valid.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>