[nrf fromlist] modules: hal_nordic: Add nrfx configuration for nRF54L15 FP1

Added dedicated nrfx configuration files for
nRF54L15 FP1, which differ from ENGA variant with
inclusion of PDM.

Upstream PR: zephyrproject-rtos/zephyr#79177

Signed-off-by: Michał Stasiak <[email protected]>

Author: mstasiaknordic

modules/hal_nordic/nrfx/nrfx_config.h

@@ -1050,10 +1050,14 @@
     #include <nrfx_config_nrf54h20_ppr.h>
 #elif (defined(NRF54H20_XXAA) || defined(NRF54H20_ENGB_XXAA)) && defined(NRF_FLPR)
     #include <nrfx_config_nrf54h20_flpr.h>
-#elif (defined(NRF54L15_XXAA) || defined(NRF54L15_ENGA_XXAA)) && defined(NRF_APPLICATION)
+#elif defined(NRF54L15_ENGA_XXAA) && defined(NRF_APPLICATION)
     #include <nrfx_config_nrf54l15_enga_application.h>
-#elif (defined(NRF54L15_XXAA) || defined(NRF54L15_ENGA_XXAA)) && defined(NRF_FLPR)
+#elif defined(NRF54L15_ENGA_XXAA) && defined(NRF_FLPR)
     #include <nrfx_config_nrf54l15_enga_flpr.h>
+#elif defined(NRF54L15_XXAA) && defined(NRF_APPLICATION)
+    #include <nrfx_config_nrf54l15_application.h>
+#elif defined(NRF54L15_XXAA) && defined(NRF_FLPR)
+    #include <nrfx_config_nrf54l15_flpr.h>
 #elif (defined(NRF54L20_XXAA) || defined(NRF54L20_ENGA_XXAA)) && defined(NRF_APPLICATION)
     #include <nrfx_config_nrf54l20_enga_application.h>
 #elif defined(NRF9120_XXAA) || defined(NRF9160_XXAA)