i2c interface polled/IT driven transfer

[Csordás Péter]

>
> This would be a nice feature for E.G. i2c commands in RedBoot.
And for every i2c device, where you have a 'system startup' init (polled 
mode can be desired, as far as I know), but after that, you would like to 
use ITs

>
> Your patch doesn't update the documentation. Could you do that as
> well?
Yes, I just waited, wheter the changes will be accepted, before I make the 
docu. for them :)
Probably I could do it today.

  Peter