ARM: dts: imx6qdl-sabreauto: Pass the DDC I2C bus

On imx6qdl-sabreauto the HDMI DDC bus is connected to I2C2, so
pass the 'ddc-i2c-bus' property accordingly.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-sabreauto.dtsi

@@ -235,6 +235,7 @@
 };
 
 &hdmi {
+	ddc-i2c-bus = <&i2c2>;
 	status = "okay";
 };