ARM64: tegra: tegra210: add dqs trim delay value.

ARM64: tegra: tegra210: add dqs trim delay value.

-add dqs trim delay value for sdmmc4 and sdmmc2.
-dqs trim delay value is needed for HS400 mode.
-For sdmmc2 these changes are done in board specific dts files
and not in common dts file, because on few boards sdmmc2 is
planned for sdio.

Change-Id: Ia42128eed60c019c72b9b69c43f09dd1502e7f44
Signed-off-by: Naveen Kumar Arepalli <naveenk@nvidia.com>
Reviewed-on: http://git-master/r/448795
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venu Byravarasu <vbyravarasu@nvidia.com>