dt-bindings: display: tegra: document Tegra132 MIPI calibration device

dt-bindings: display: tegra: document Tegra132 MIPI calibration device

Document MIPI calibration device found in Tegra132. This compatible
already exists in the Linux kernel, I have just documented it to satisfy
warnings.

Each Tegra SoC generation has unique set of registers which should be
configured. They all differ, hence fallback is not suitable here.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # tegra20, parallel camera
Signed-off-by: Thierry Reding <treding@nvidia.com>