arm64: dts: ti: k3-j7200-som: Enable I2C

This patch enables wkup_i2c0 node in board dts file
along with pin mux and speed.
Also enables underneath eeprom CAV24C256WE.

J7200 Datasheet (Table 6-106, Section 6.4 Pin Multiplexing) :
https://www.ti.com/lit/ds/symlink/dra821u.pdf

J7200 User Guide (Section 4.3, Table 4-2) :
https://www.ti.com/lit/ug/spruiw7a/spruiw7a.pdfSigned-off-by: Udit Kumar <u-kumar1@ti.com>
Link: https://lore.kernel.org/r/20230419040007.3022780-3-u-kumar1@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi

@@ -118,6 +118,15 @@ J721E_WKUP_IOPAD(0x0008, PIN_INPUT, 0)  /* MCU_OSPI0_DQS */
 	};
 };
 
+&wkup_pmx2 {
+	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
+			pinctrl-single,pins = <
+			J721E_WKUP_IOPAD(0x98, PIN_INPUT_PULLUP, 0) /* (F20) WKUP_I2C0_SCL */
+			J721E_WKUP_IOPAD(0x9c, PIN_INPUT_PULLUP, 0) /* (H21) WKUP_I2C0_SDA */
+		>;
+	};
+};
+
 &main_pmx0 {
 	main_i2c0_pins_default: main-i2c0-pins-default {
 		pinctrl-single,pins = <
@@ -214,6 +223,18 @@ exp_som: gpio@21 {
 	};
 };
 
+&wkup_i2c0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_i2c0_pins_default>;
+	clock-frequency = <400000>;
+
+	eeprom@50 {
+		compatible = "atmel,24c256";
+		reg = <0x50>;
+	};
+};
+
 &ospi0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;