tests gpio_basic_api: Enable for nrf54l15bsim

Enable this test, and provide overlays, in the nrf54l15bsim

Note this test specs 2 GPIO pins to be shorted. This can be done
for the simulation target by calling zephyr.exe with the option
`-gpio_conf_file=shorts_config.txt`
Where  that file would contain this one line (for the provided overlay)
---- shorts_config.txt
short 1.1 1.2
----

Signed-off-by: Alberto Escolar Piedras <[email protected]>

Author: aescolar

tests/drivers/gpio/gpio_basic_api/boards/nrf54l15bsim_nrf54l15_cpuapp.conf

@@ -0,0 +1 @@
+CONFIG_SKIP_PULL_TEST=y

tests/drivers/gpio/gpio_basic_api/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"

tests/drivers/gpio/gpio_basic_api/testcase.yaml

@@ -13,7 +13,7 @@ tests:
     filter: dt_compat_enabled("test-gpio-basic-api") and not dt_compat_enabled("arduino-header-r3")
 
   drivers.gpio.nrf_sense_edge:
-    platform_allow: nrf52840dk/nrf52840 nrf52_bsim
+    platform_allow: nrf52840dk/nrf52840 nrf52_bsim nrf54l15bsim/nrf54l15/cpuapp
     extra_args: "DTC_OVERLAY_FILE=boards/nrf52840dk_nrf52840.overlay;\
                  boards/nrf52840dk_nrf52840_sense_edge.overlay"