mmc: cqhci: Decrease the QSR polling period

Configure the controller to send the QSR at 1 clock period.
This would send SQS(CMD13) when no data transfer is in
progress. This decrease in the polling period increases the
performance of the device.

Change-Id: I6fb414c13923d963a187ba004e0285ba31ea49d3
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>