arm64: dts: meson: add i2c3/rtc nodes and vrtc alias to ODROID N2 dtsi

Enable the onboard RTC hardware present on ODROID N2 and N2+ boards. Also
add aliases to ensure vrtc does not claim /dev/rtc0.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>

arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi

@@ -13,6 +13,8 @@
 	aliases {
 		serial0 = &uart_AO;
 		ethernet0 = &ethmac;
+		rtc0 = &rtc;
+		rtc1 = &vrtc;
 	};
 
 	dioo2133: audio-amplifier-0 {
@@ -478,6 +480,18 @@
 	linux,rc-map-name = "rc-odroid";
 };
 
+&i2c3 {
+	status = "okay";
+	pinctrl-0 = <&i2c3_sda_a_pins>, <&i2c3_sck_a_pins>;
+	pinctrl-names = "default";
+
+	rtc: rtc@51 {
+		compatible = "nxp,pcf8563";
+		reg = <0x51>;
+		wakeup-source;
+	};
+};
+
 &pwm_ab {
 	pinctrl-0 = <&pwm_a_e_pins>;
 	pinctrl-names = "default";