dt-bindings: tegra186-gpio: Add information for Tegra194

The Tegra194 GPIO controller is similar to the one in Tegra186.
Add relevant information to the device tree binding documentation.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.txt

@@ -68,6 +68,8 @@ Required properties:
     One of:
     - "nvidia,tegra186-gpio".
     - "nvidia,tegra186-gpio-aon".
+    - "nvidia,tegra194-gpio".
+    - "nvidia,tegra194-gpio-aon".
 - reg-names
     Array of strings.
     Contains a list of names for the register spaces described by the reg
@@ -91,6 +93,8 @@ Required properties:
     depending on compatible value:
     - "nvidia,tegra186-gpio": 6 entries.
     - "nvidia,tegra186-gpio-aon": 1 entry.
+    - "nvidia,tegra194-gpio": 6 entries.
+    - "nvidia,tegra194-gpio-aon": 1 entry.
 - gpio-controller
     Boolean.
     Marks the device node as a GPIO controller/provider.