[flashrom] ASUS P5LD2 board support

[François Revol]

(note I'm not subscribed to the list)

This patch enables support for the ASUS A7V8X-MX motherboard.

The board-specific code was marked as not tested.

Without it, flashing failed.

I just found this board at the local LUG and tested it with a patched
svn, and it seems to work:
http://paste.flashrom.org/view.php?id=2632

It does output some "SCIP never cleared", but it did flash the chip I
needed correctly (md5sums match).

DMIdecode for this motherboard:
http://paste.flashrom.org/view.php?id=2633

François.