boards: nxp: frdm_mcxe247: add i2c feature

- support accel feature using lpi2c0 and enable accel cases:
  accel_trig/accel_polling
- enable i2c_target_api case using lpi2c0 and lpi2c1

Signed-off-by: Lucien Zhao <lucien.zhao@nxp.com>

boards/nxp/frdm_mcxe247/frdm_mcxe247-pinctrl.dtsi

@@ -26,6 +26,26 @@
 		};
 	};
 
+	pinmux_lpi2c0: pinmux_lpi2c0 {
+		group0 {
+			pinmux = <LPI2C0_SCL_PTA3>,
+				 <LPI2C0_SDA_PTA2>;
+			drive-strength = "low";
+			slew-rate = "slow";
+			input-enable;
+		};
+	};
+
+	pinmux_lpi2c1: pinmux_lpi2c1 {
+		group0 {
+			pinmux = <LPI2C1_SCL_PTD9>,
+				 <LPI2C1_SDA_PTD8>;
+			drive-strength = "low";
+			slew-rate = "slow";
+			input-enable;
+		};
+	};
+
 	pinmux_adc0: pinmux_adc0 {
 		group0 {
 			pinmux = <ADC0_SE1_PTA1>,

boards/nxp/frdm_mcxe247/frdm_mcxe247.dts

@@ -22,6 +22,7 @@
 		sw0 = &user_button_2;
 		sw1 = &user_button_3;
 		rtc = &counter_rtc;
+		accel0 = &fxls8974;
 	};
 
 	chosen {
@@ -221,6 +222,24 @@
 	status = "okay";
 };
 
+&lpi2c0 {
+	pinctrl-0 = <&pinmux_lpi2c0>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	fxls8974: fxls8974@18 {
+		compatible = "nxp,fxls8974";
+		reg = <0x18>;
+		status = "okay";
+	};
+};
+
+&lpi2c1 {
+	pinctrl-0 = <&pinmux_lpi2c1>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &edma {
 	status = "okay";
 };

boards/nxp/frdm_mcxe247/frdm_mcxe247.yaml

@@ -15,6 +15,7 @@ toolchain:
   - gnuarmemb
 supported:
   - uart
+  - i2c
   - gpio
   - adc
   - arduino_gpio

samples/sensor/accel_trig/boards/frdm_mcxe247.conf

@@ -0,0 +1 @@
+CONFIG_FXLS8974_TRIGGER_OWN_THREAD=y

samples/sensor/accel_trig/boards/frdm_mcxe247.overlay

@@ -0,0 +1,11 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright 2025 NXP
+ */
+
+&fxls8974 {
+	status = "okay";
+	int1-gpios = <&gpioe 14 GPIO_ACTIVE_LOW>;
+	int2-gpios = <&gpioe 11 GPIO_ACTIVE_LOW>;
+};

tests/drivers/i2c/i2c_target_api/boards/frdm_mcxe247.overlay

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2025 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* To test this sample, connect
+ * LPI2C0 SCL(J2-20)  -->  LPI2C3 SCL(J5-5)
+ * LPI2C0 SDA(J2-18)  -->  LPI2C3 SDA(J5-6)
+ */
+
+&lpi2c0 {
+	eeprom0: eeprom@54 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x54>;
+		size = <256>;
+	};
+};
+
+&lpi2c1 {
+	eeprom1: eeprom@56 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x56>;
+		size = <256>;
+	};
+};
+
+/* Disable the FXLS8974 sensor to avoid conflict with accel samples */
+&fxls8974 {
+	status = "disabled";
+};