mmc: tegra: Clear tuning overrides if not required

If there is no need to maintain boot voltage, clear tuning
override voltages set.

Bug 1353926

Change-Id: Ie36fd98b6245839ea8ec4b6fd9a2afb4cd56ff3b
Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Reviewed-on: http://git-master/r/264940
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
1 file changed