ARM: tegra: colibri_t20: rename i2c_ddc to hdmi_ddc

Rename i2c_ddc to hdmi_ddc to be more in-line with other device trees.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra20-colibri.dtsi

@@ -19,7 +19,7 @@ memory@0 {
 
 	host1x@50000000 {
 		hdmi@54280000 {
-			nvidia,ddc-i2c-bus = <&i2c_ddc>;
+			nvidia,ddc-i2c-bus = <&hdmi_ddc>;
 			nvidia,hpd-gpio =
 				<&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
 			pll-supply = <&reg_1v8_avdd_hdmi_pll>;
@@ -459,7 +459,7 @@ i2c@7000c000 {
 	};
 
 	/* DDC_SCL/SDA on X3 pin 15/16 (e.g. display EDID) */
-	i2c_ddc: i2c@7000c400 {
+	hdmi_ddc: i2c@7000c400 {
 		clock-frequency = <10000>;
 	};