mmc: sdhci-msm: consider clock frequency above 200MHz during DLL config

SDR104 card can handle the clock frequency upto 208MHz but when we program
MCLK_FREQ field in DLL_CONFIG register, we don't choose right value for
MCLK_FREQ field when clock frequency is greater than 200MHz. This change
fixes it.

Change-Id: I523fc27a0ed6670915a8ce36b2fbfd31446633d7
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>