ARM: tegra: Enable CEC support on Jetson TK1

Enable the CEC controller on Jetson TK1 so that it can be used to
communicate with CEC devices via the HDMI connector.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra124-jetson-tk1.dts

@@ -67,6 +67,10 @@ hdmi@54280000 {
 		};
 	};
 
+	cec@70015000 {
+		status = "okay";
+	};
+
 	gpu@0,57000000 {
 		/*
 		 * Node left disabled on purpose - the bootloader will enable