mmc: sdhci: Implement set_transfer_params() cmdq host op

This is needed to set the dma mode for CQ transfers. The dma mode
may be changed by the commands sent in legacy mode (like tuning
which uses FIFO mode).

Change-Id: Idaa2cb0c7712846f6827272caefc112b127ef818
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>