[LinuxBIOS] CX700 support in Flashrom

[Randall Philipson]

Add CX700 Device ID 

Signed-off-by: Randall Philipson <rtphilipson at cox.net>
---

This probably qualifies as a trivial patch since the CX700 uses the same register to enable flash programming.  But I'd appreciate it if someone could ack if for me so I can start to get a feel for this check-in process.  I've tested it with SST39SF040 and SST49LF004, at least reading and writing, and it seems to work fine. (At least on my development board).  It is my goal to get a port working for the CX700, but there are a lot of obstacles in my way.  The biggest being my lack of intellect.  We shall see.