let the mxcmmc driver use the dmaengine API

[Sascha Hauer]

This saves us several ifdefs and also adds mxcmmc DMA support for the
i.MX31 processor.

Sascha

Sascha Hauer (1):
      mxcmmc: use dmaengine API

 drivers/mmc/host/mxcmmc.c |  172 +++++++++++++++++++++++++--------------------
 1 files changed, 97 insertions(+), 75 deletions(-)