samples: adc: Adding Infineon AutAnalog ADC samples

Adding files to allow running the following samples for the Infineon
AutAnalog SAR ADC driver on the PSOC Edge family of MCUs:
  * samples/drivers/adc_dt
  * samples/drivers/adc_sequence

Signed-off-by: John Batch <[email protected]>

Author: jsbatch

samples/drivers/adc/adc_dt/boards/kit_pse84_eval_pse846gps2dbzc4a_m55.overlay

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2025 Infineon Technologies AG,
+ * or an affiliate of Infineon Technologies AG.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/adc/adc.h>
+
+/ {
+	zephyr,user {
+		io-channels = <&adc0 0>, <&adc0 1>, <&adc0 2>, <&adc0 3>;
+	};
+};
+
+&adc0 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <0>;   /* P10.0 */
+	};
+
+	channel@1 {
+		reg = <1>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <1>;   /* P10.1 */
+	};
+
+	channel@2 {
+		reg = <2>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <2>;   /* P10.2 */
+	};
+
+	channel@3 {
+		reg = <3>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <3>;   /* P10.3 */
+	};
+};

samples/drivers/adc/adc_sequence/boards/kit_pse84_eval_pse846gps2dbzc4a_m55.overlay

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2025 Infineon Technologies AG,
+ * or an affiliate of Infineon Technologies AG.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/adc/adc.h>
+
+/ {
+	aliases {
+		adc0 = &adc0;
+	};
+};
+
+&adc0 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <0>;   /* P10.0 */
+	};
+
+	channel@1 {
+		reg = <1>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <1>;   /* P10.1 */
+	};
+
+	channel@2 {
+		reg = <2>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <2>;   /* P10.2 */
+	};
+
+	channel@3 {
+		reg = <3>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME(ADC_ACQ_TIME_MICROSECONDS, 1)>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,resolution = <12>;
+		zephyr,input-positive = <3>;   /* P10.3 */
+	};
+};