[nrf fromtree] tests gpio_get_direction: Enable for nrf54l15bsim

Enable this test by providing an overlay for the nrf54l15bsim

Signed-off-by: Alberto Escolar Piedras <[email protected]>
(cherry picked from commit 990fc4c)

Author: aescolar

tests/drivers/gpio/gpio_get_direction/boards/nrf54l15bsim_nrf54l15_cpuapp.overlay

@@ -0,0 +1,7 @@
+/*
+ * Copyright (c) 2024 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "nrf52_bsim.overlay"