arm64: dts: ti: k3-j721s2-som-p0: Enable wakeup_i2c0 and eeprom

Enable wakeup_i2c and use un-used pinmux. While at it, describe the
board detection eeprom present on the board.

Signed-off-by: Nishanth Menon <[e-mail]>
Reviewed-by: Udit Kumar <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vignesh Raghavendra <[e-mail]>

arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi

···
 	};
 };
 
+&wkup_pmx2 {
+	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x98, PIN_INPUT, 0) /* (H24) WKUP_I2C0_SCL */
+			J721S2_WKUP_IOPAD(0x9c, PIN_INPUT, 0) /* (H27) WKUP_I2C0_SDA */
+		>;
+	};
+};
+
 &main_pmx0 {
 	main_i2c0_pins_default: main-i2c0-pins-default {
 		pinctrl-single,pins = <
···
 			J721S2_IOPAD(0x028, PIN_INPUT, 0) /* (AB24) MCAN16_RX */
 			J721S2_IOPAD(0x024, PIN_OUTPUT, 0) /* (Y28) MCAN16_TX */
 		>;
+	};
+};
+
+&wkup_i2c0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_i2c0_pins_default>;
+	clock-frequency = <400000>;
+
+	eeprom@50 {
+		/* CAV24C256WE-GT3 */
+		compatible = "atmel,24c256";
+		reg = <0x50>;
 	};
 };