mmc: tegra: Correct tuning voltage value

mmc: tegra: Correct tuning voltage value

Correct sdhci-tegra.2 tuning voltage value

Bug 1423429

Change-Id: I9ba17c9a7a7d975c0d3fb1713829539d7c9868b3
Signed-off-by: Naveen Kumar Arepalli <naveenk@nvidia.com>
Reviewed-on: http://git-master/r/373419
(cherry picked from commit f48c112fe4ec64dfafd383c60ad160f07f27050f)
Reviewed-on: http://git-master/r/410196
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Shreshtha Sahu <ssahu@nvidia.com>
Tested-by: Shreshtha Sahu <ssahu@nvidia.com>
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>