[coreboot] Jetway J7F2 target

[Alex Mauer]

Since the Jetway J7F2* and J7F4* motherboards appear to work fine, what
can be done about getting targets for them?

Mine at least (J7F2WE1G3) works without changing the irq_tables.  The
only change is in mainboard/via/epia-cn/Config.lb, changing "chip
superio/via/vt1211" to "chip superio/fintek/f71805f".

However, it would be nice(r) if there was a targets/jetway/j7f2 and
presumably a src/mainboard/jetway/j7f2.

I assume there would need to be some way of ensuring that the other
files, like mainboard.c, auto.c, etc. stayed synchronised between them
though.

What needs to be done for a j7f2 target to be created?

-Alex Mauer "hawke"