[U-Boot] Converting arm_dcc to driver model

[Michal Simek]

Hi Simon,

On 31.1.2016 17:16, Simon Glass wrote:
> Hi Michal,
> 
> I notice that the only user of this driver appears to be a board you
> maintain. Do you think you could convert this to driver model? Please
> see doc/driver-model/serial-howto.txt.
> 
> I'm hoping you might have hardware to test with.

yep. I have all hw for it. I want to keep this support there because it
is pretty helpful for early debugging.
I will convert it to DM.
DT binding is something what we can decide later because AFAIK it
doesn't exist.

Thanks,
Michal