dt-bindings: display: tegra: Document Tegra20 and Tegra30 CSI

dt-bindings: display: tegra: Document Tegra20 and Tegra30 CSI

Document CSI HW block found in Tegra20 and Tegra30 SoC.

The #nvidia,mipi-calibrate-cells is not an introduction of property, such
property already exists in nvidia,tegra114-mipi.yaml and is used in
multiple device trees. In case of Tegra30 and Tegra20 CSI block combines
mipi calibration function and CSI function, in Tegra114+ mipi calibration
got a dedicated hardware block which is already supported. This property
here is used to align with mipi-calibration logic used by Tegra114+.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>