DS90UH949 1080p HDMI to FPD-Link III bridge Serializer driver

Required properties:
- compatible : should be "ti,ds90uh949".
- reg : i2c regmap address
- sor-instance : Serial Output Resource instance which should be driving
                 ds90uh949 bridge chip
- ti,enable-gpio : GPIO for enabling DS90UH949 chip

Examples:
        i2c@3160000 {
                ds90uh949@0e {
                        compatible = "ti,ds90uh949";
                        reg = <0x0E>;
                        status = "okay";
                        sor-instance = <1>;
                        ti,enable-gpio = <&tegra_main_gpio TEGRA_MAIN_GPIO(O, 0) 0>;
                };
}