[PATCH] Fixup for Numonyx M29W128 chips

[massimo cirillo]

Hi Darius,
what kind of failure did you experiment with M29W?

In my opinion, complete removal of the buffer program feature is not a
good solution,
because you are taking away an important feature of the device, that results in
a very high performance decrease.

Moreover, if you make the fix applicable to all devices with 0x227E device ID,
you are removing the same feature from other devices too, such as M29EW
that has a much bigger buffer thus resulting in a dramatic performance decrease
for this device.