ff: nordic: Move wdt to target specific folder

Move WDT driver implementation to a target specific folder to allow
for different implementations for different targets.

Signed-off-by: Andreas Vibeto <andreas.vibeto@nordicsemi.no>
diff --git a/api-tests/platform/drivers/watchdog/nrf/nrf_wdt.c b/api-tests/platform/drivers/watchdog/nrf/nrf5340/nrf_wdt.c
similarity index 100%
rename from api-tests/platform/drivers/watchdog/nrf/nrf_wdt.c
rename to api-tests/platform/drivers/watchdog/nrf/nrf5340/nrf_wdt.c
diff --git a/api-tests/platform/targets/tgt_ff_tfm_nrf_common/target.cmake b/api-tests/platform/targets/tgt_ff_tfm_nrf_common/target.cmake
index aba24ba..adeb37e 100644
--- a/api-tests/platform/targets/tgt_ff_tfm_nrf_common/target.cmake
+++ b/api-tests/platform/targets/tgt_ff_tfm_nrf_common/target.cmake
@@ -43,7 +43,7 @@
 		# Driver files will be compiled as part of driver partition
 		${PSA_ROOT_DIR}/platform/targets/tgt_ff_tfm_nrf_common/spe/pal_driver_intf.c
 		${PSA_ROOT_DIR}/platform/drivers/nvmem/pal_nvmem.c
-		${PSA_ROOT_DIR}/platform/drivers/watchdog/nrf/nrf_wdt.c
+		${PSA_ROOT_DIR}/platform/drivers/watchdog/nrf/${PSA_API_TEST_TARGET}/nrf_wdt.c
 	)
 endif()