arm64: dts: meson-sm1-odroid: add cec nodes

Enable CEC in same way it is done for other meson odroid devices
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20211007180130.805401-1-dimitrysh@google.com

arch/arm64/boot/dts/amlogic/meson-sm1-odroid.dtsi

@@ -225,6 +225,20 @@ &arb {
 	status = "okay";
 };
 
+&cec_AO {
+	pinctrl-0 = <&cec_ao_a_h_pins>;
+	pinctrl-names = "default";
+	status = "disabled";
+	hdmi-phandle = <&hdmi_tx>;
+};
+
+&cecb_AO {
+	pinctrl-0 = <&cec_ao_b_h_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+	hdmi-phandle = <&hdmi_tx>;
+};
+
 &clkc_audio {
 	status = "okay";
 };