In SDHCI protocol, the 'Block count enable' bit of the Transfer
Mode register is relevant only in multi block transfers. We need
not check it in single block transfers.

Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 20170214185225.7994-5-ppandit@redhat.com
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>