uboot-imx

dm: mmc: fsl_esdhc: Pass private data to internal functions

With driver model we will not use mmc->priv to access driver-private data.
To accomodate this, update internal functions so that we can pass the
private data directly. This will allow the caller to obtain it as it
prefers.

Signed-off-by: Simon Glass <sjg@chromium.org>