mmc: queue: Check for CQE disable state

Add a check in mmc_cmdq_ready_wait to not pull any
requests in case if CQE is disabled and card is not suspended.
This means that CQE must be in error state and so mmc_cmdq_thread
should stop issuing requests.

Change-Id: I0c5e6556d3d881f1a675db4fff4f995de024ddf8
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>