dt-bindings: Fix entry name for I/O High Voltage property

Correct the name of the I/O High Voltage Property from
'nvidia,io-high-voltage' to 'nvidia,io-hv'.

Fixes: 2585a584f8 ("pinctrl: Add Tegra194 pinctrl DT bindings")
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Documentation/devicetree/bindings/pinctrl/nvidia,tegra194-pinmux.txt

@@ -99,7 +99,7 @@ Example:
 					nvidia,schmitt = <TEGRA_PIN_DISABLE>;
 					nvidia,lpdr = <TEGRA_PIN_ENABLE>;
 					nvidia,enable-input = <TEGRA_PIN_DISABLE>;
-					nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>;
+					nvidia,io-hv = <TEGRA_PIN_ENABLE>;
 					nvidia,tristate = <TEGRA_PIN_DISABLE>;
 					nvidia,pull = <TEGRA_PIN_PULL_NONE>;
 				};