x86: add Barracuda Networks F12 interfaces

x86: add Barracuda Networks F12 interfaces

Match interface numbers with printed numbers on device enclosure and
assign first port as WAN interface.

Notes
Serial console is available through RJ-45 port with Cisco pinout
baud: 19200, parity: none, flow control: none
The device is setup with UEFI. To enter setup hold DEL or ESC key on
boot. Default UEFI Administrator password is: bcndk1
For users using graphics IC it's advisable to disable display with:
i915.disable_display=1
appending to kernel command line inside bootloader, to save about
0.5-0.6W energy on idle.
For users not using graphics IC, disable it in UEFI, this will save about
1.5W energy on idle.
Pins marked CN19 are ATX power On/Off button.

Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>