[PATCH 6/8] board: tqma7: add code for u-boot with spl

[Feilke, Alexander]

 > struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;

One note on this cast here: It seems weird to cast fsl_esdhc_priv to
fsl_esdhc_cfg here. This is done in many i.MX boards though. Just want 
to make
sure if this is the correct and intended way to access the sdhc_base 
address.

Thanks