[nrf fromtree] tests: drivers: adc: Run test on nrf54l15 NS

Enable adc_api test on nrf54l15dk/nrf54l15/cpuapp/ns platform.

Signed-off-by: Sebastian Głąb <[email protected]>
(cherry picked from commit 4689b29)

Author: nordic-segl

tests/drivers/adc/adc_api/boards/nrf54l15dk_nrf54l15_cpuapp_ns.overlay

@@ -0,0 +1,7 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ */
+
+#include "nrf54l15dk_nrf54l15_cpuapp.overlay"

tests/drivers/adc/adc_api/testcase.yaml

@@ -11,7 +11,6 @@ tests:
       - nucleo_u031r8
       - panb611evb/nrf54l15/cpuapp
       - panb611evb/nrf54l15/cpuapp/ns
-      - nrf54l15dk/nrf54l15/cpuapp/ns
       - nrf54l15dk/nrf54l10/cpuapp/ns
       - nrf54lm20dk/nrf54lm20a/cpuapp/ns
       - bl54l15_dvk/nrf54l10/cpuapp/ns