samples: drivers: adc: Add beagleconnect freedom overlay

- Add support for beagleconnect freedom

Signed-off-by: Ayush Singh <[email protected]>

Author: Ayush1325

samples/drivers/adc/adc_dt/boards/beagleconnect_freedom.overlay

@@ -0,0 +1,79 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2024 Ayush Singh <[email protected]>
+ */
+
+/ {
+	zephyr,user {
+		/* Reading mulitple pins not possible */
+		io-channels = <&adc0 0x09>;
+		io-channel-names = "MB1_AN";
+
+		/*
+		 * io-channels = <&adc0 0x0a>;
+		 * io-channel-names = "MB2_AN";
+		 */
+	};
+};
+
+&adc0 {
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* MB1 AN */
+	channel@9 {
+		reg = <9>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	/* MB2 AN */
+	channel@a {
+		reg = <10>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	/* MB1/2 SCL */
+	channel@b {
+		reg = <11>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	/* MB1/2 SDA */
+	channel@c {
+		reg = <12>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	/* MB2 CS */
+	channel@d {
+		reg = <13>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	/* MB1 CS */
+	channel@e {
+		reg = <14>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+};