dt-bindings: rtc: tegra: Document Tegra264 RTC

Add the compatible string for the RTC block found on the Tegra264 SoC.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250507143802.1230919-3-thierry.reding@gmail.com
Signed-off-by: Thierry Reding <treding@nvidia.com>

Author: thierryreding

Documentation/devicetree/bindings/rtc/nvidia,tegra20-rtc.yaml

@@ -28,6 +28,7 @@ properties:
               - nvidia,tegra186-rtc
               - nvidia,tegra194-rtc
               - nvidia,tegra234-rtc
+              - nvidia,tegra264-rtc
           - const: nvidia,tegra20-rtc
 
   reg: