arm64: dts: imx93-kontron: Add RTC interrupt signal

The RTC EVI ouptut is connected to a GPIO. Add the interrupt
so it can be used by the RTC driver.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>

arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi

@@ -205,6 +205,9 @@ eeprom@50 {
 	rv3028: rtc@52 {
 		compatible = "microcrystal,rv3028";
 		reg = <0x52>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_rtc>;
+		interrupts-extended = <&gpio3 19 IRQ_TYPE_LEVEL_LOW>;
 	};
 };
 
@@ -468,6 +471,12 @@ MX93_PAD_CCM_CLKO4__GPIO4_IO29			0x31e /* CARRIER_PWR_EN */
 		>;
 	};
 
+	pinctrl_rtc: rtcgrp {
+		fsl,pins = <
+			MX93_PAD_SD2_VSELECT__GPIO3_IO19		0x31e
+		>;
+	};
+
 	pinctrl_sai3: sai3grp {
 		fsl,pins = <
 			MX93_PAD_GPIO_IO20__SAI3_RX_DATA00		0x31e /* I2S_A_DATA_IN */