[nrf fromtree] platform: nordic_nrf: nrf54lc10: align system file paths to Split MDK

Split MDK introduces individual per-device directories.
Align paths to new structure.

Change-Id: I399d37174d67ec20a24a545c08a818225e36e057
Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>
(cherry picked from commit e75cf4b)

Author: nika-nordic

platform/ext/target/nordic_nrf/common/nrf54lc10a/CMakeLists.txt

@@ -28,7 +28,7 @@ endif()
 
 target_sources(platform_s
     PRIVATE
-        ${HAL_NORDIC_PATH}/nrfx/bsp/stable/mdk/system_nrf54l.c
+        ${HAL_NORDIC_PATH}/nrfx/bsp/stable/mdk/nrf54l/system_nrf54l.c
         ../nrf54l/nrf54l_init.c
 )
 

platform/ext/target/nordic_nrf/common/nrf54lc10a/ns/CMakeLists.txt

@@ -18,7 +18,7 @@ target_include_directories(platform_ns
 
 target_sources(platform_ns
     PRIVATE
-        ${HAL_NORDIC_PATH}/nrfx/bsp/stable/mdk/system_nrf54l.c
+        ${HAL_NORDIC_PATH}/nrfx/bsp/stable/mdk/nrf54l/system_nrf54l.c
 )
 
 target_compile_definitions(platform_ns