samples: zephyr: drivers: audio: dmic: Run sample on nRF54LM20A

Enable execution of the DMIC sample on nrf54lm20a.

Signed-off-by: Sebastian Głąb <[email protected]>

Author: nordic-segl

samples/zephyr/drivers/audio/dmic/boards/nrf54lm20apdk_nrf54lm20a_cpuapp.overlay

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&pinctrl {
+	pdm20_default_alt: pdm20_default_alt {
+		group1 {
+			psels = <NRF_PSEL(PDM_CLK, 1, 10)>,
+				<NRF_PSEL(PDM_DIN, 1, 11)>;
+		};
+	};
+};
+
+dmic_dev: &pdm20 {
+	status = "okay";
+	pinctrl-0 = <&pdm20_default_alt>;
+	pinctrl-names = "default";
+	clock-source = "PCLK32M";
+};

samples/zephyr/drivers/audio/dmic/sample.yaml

@@ -2,8 +2,6 @@ sample:
   name: DMIC sample
 tests:
   nrf.extended.sample.drivers.audio.dmic:
-    depends_on:
-      - future_target
     tags:
       - dmic
       - ci_samples_zephyr_drivers_audio_dmic
@@ -15,3 +13,7 @@ tests:
       regex:
         - "DMIC sample"
         - "Exiting"
+    platform_allow:
+      - nrf54lm20apdk/nrf54lm20a/cpuapp
+    integration_platforms:
+      - nrf54lm20apdk/nrf54lm20a/cpuapp