RFC: [PATCH V3 0/9 Integration of SmartMedia/xD into mtd subsystem

[Maxim Levitsky]

This is third version of my patches.

Changes since V2:

* Resolved write speed problem, now write speed is around 1 MB/s
more that twice the speed of windows driver.

* Made the FTL less dependent on mtd driver.
It now uses standard mtd functions for bad block handling.
Also made initial device scan be safer against damaged media.

* FTL doesn't depend on common module any more.
This makes Kconfig much cleaner, and makes it possible to use the FTl
without enabling the nand support.
Common module is cleaned up a lot.

Now, everything works, everything is fast (except maybe initial zone
scan which takes around 2 seconds...)

Still bear in mind that FTL can destroy data, especially if your flash
card is worn out.

I consider this version to be merge worthy.

Best regards,
Maxim Levitsky