[nrf noup] samples: basic: blinky: add eGPIO tests configuration

Add overlay for nrf54l15dk to enable eGPIO tests.

Signed-off-by: Jakub Zymelka <[email protected]>

Author: jaz1-nordic

samples/basic/blinky/boards/nrf54l15dk_nrf54l15_cpuapp_egpio.overlay

@@ -0,0 +1,9 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+
+&led0 {
+	gpios = <&egpio 7 GPIO_ACTIVE_HIGH>;
+};