This set of patches is an extra step to remove at91-mci dirver which is mainly
used for old chips having mci IPs whose version is lesser than v2xx (rm9200
and 9261).
Since it introduces many changes and there was a lack of logs to help people
when there is an issue with atmel-mci driver, I added some debug logs.

These changes have been tested on at91rm9200, at91sam9261, at91sam9263,
at91sam9g10 and at91sam9g45.


Regards

Ludovic