dt-bindings: serial: Document Tegra234 TCU

Add the compatible string for the TCU found on the Tegra234 SoC.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2021-11-19 15:38:39 +01:00
commit cd1fe47862