mmc: core: Update HS400 timing mode before performing tuning

There is no need to prepare anything additional before tuning for HS400
other than updating the HS400 timing mode, so just do that.

Change-Id: Ib7a72a4bb9b901e32413acf440c925c4cd50a73d
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
[subhashj@codeaurora.org: fixed trivial merge conflicts]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
1 file changed