ARM: ux500: Pass SDI DMA information though AUX_DATA to MMCI

There are four SDIs on the HREF, as opposed to the original two
enabled on Snowball. To get them working we have to pass their DMA
information in the same was as we need with the other two.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>