drivers: ethernet: add adin2111

Adds initial ADIN2111 2-Port 10BASE-T1L (SPE)
switch support. Works over SPI.

The driver creates 2 interfaces, 1 per port (PHY).
Configures multicast and broadcast filters.
The same unicast is applied to both ports.

Supports:
  - Link state detection
  - CRC enable/disable
  - Ports config set
  - Ports ETH stats

Provides functions for MDIO driver.

Signed-off-by: Georgij Cernysiov <geo.cgv@gmail.com>
8 files changed