mmc: sdhci-msm-ice: Update ice config vop to config_start

The config vop of the ice driver has been updated to config_start.
Updated the sdhci-ice driver to reflect this change.

Change-Id: I7c44cc5011c6a7c88b9acf9cb9d8e61ef3f8e33a
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>