Revert "i2c: tegra: Better handle case where CPU0 is busy for a long time"

This reverts commit a900aeac because
regressions were showing up.

Suggested-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/dmaengine/20200319201140.17451-1-digetx@gmail.com/


Signed-off-by: Wolfram Sang <wsa@the-dreams.de>