[CFT 04/11] mmc: omap: add DMA engine support

[Tony Lindgren]

* Russell King <rmk+kernel at arm.linux.org.uk> [120607 04:11]:
> Add DMA engine support to the OMAP driver.  This supplements the
> private DMA API implementation contained within this driver, and the
> driver can be switched at build time between using DMA engine and the
> private DMA API.
> 
> Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>

This I boot tested on 770 and N800:

Tested-by: Tony Lindgren <tony at atomide.com>