arm64: tegra: Add CEC controller on Tegra194

The CEC controller found on Tegra194 can be used to control consumer
devices using the HDMI CEC pin.

Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra194.dtsi

@@ -357,6 +357,15 @@
 			interrupt-parent = <&gic>;
 		};
 
+		cec@3960000 {
+			compatible = "nvidia,tegra194-cec";
+			reg = <0x03960000 0x10000>;
+			interrupts = <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&bpmp TEGRA194_CLK_CEC>;
+			clock-names = "cec";
+			status = "disabled";
+		};
+
 		hsp_top0: hsp@3c00000 {
 			compatible = "nvidia,tegra186-hsp";
 			reg = <0x03c00000 0xa0000>;