Add board enable for ASUS A7V8X-MX

Use the same trick as for the MX-SE variant.
Despite being mentioned as supported on
http://flashrom.org/Supported_hardware flashrom fails to detect the
flash chip without this.

Corresponding to flashrom svn r1766.

Signed-off-by: Fran├žois Revol <revol@free.fr>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
1 file changed