tests: drivers: adc: adc_api: add overlay for nucleo_c092rc

Add an overlay to use adc1 channel 0 (on PA0) for testing.

Signed-off-by: Thomas Stranger <[email protected]>

Author: str4t0m

tests/drivers/adc/adc_api/boards/nucleo_c092rc.overlay

@@ -0,0 +1,26 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2025 STMicroelectronics
+ * Copyright (c) 2025 Thomas Stranger
+ */
+
+/ {
+	zephyr,user {
+		/* adjust channel number according to pinmux in board.dts */
+		io-channels = <&adc1 0>;
+	};
+};
+
+&adc1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_MAX>;
+		zephyr,resolution = <12>;
+	};
+};