Implementation W_ACK_PAYLOAD command

[gmgkostik]

Do you have plan implement W_ACK_PAYLOAD command?

[mciupak]

Configfs should be implemented first in order to be able to decide if driver should use W_ACK_PAYLOAD or any other command, because now it would have to be hard coded in the driver. There are already some hard coded settings which I am not happy with, thus configfs is needed to give user possibility co configure behavior of the driver.

I will try to update TODO file in a while.