[nrf fromlist] tests: drivers: gpio: gpio_basic_api: enable for nrf54l15dk

Incorrectly removed during transfer pdk->dk.

Upstream PR #: 81107

Signed-off-by: Piotr Kosycarz <[email protected]>
(cherry picked from commit 5b1dd8b)

Author: nordic-piks

tests/drivers/gpio/gpio_basic_api/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	resources {
+		compatible = "test-gpio-basic-api";
+		out-gpios = <&gpio1 10 0>;
+		in-gpios = <&gpio1 11 0>;
+	};
+};
+
+&gpiote20 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};