au6601: some comment

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
au6601: some rework and added DATA part

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
au6601:..

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
au6601: copy past more DATA from sdhci

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
au6601:..

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
au6601:...

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>