modules: hal_silabs: Update HAL to v2025.6.0

Update the Simplicity SDK HAL for Silicon Labs Series 2
devices to v2025.6.0.

The em_core source file no longer exists in the latest version
of the HAL, and is removed.

Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

modules/hal_silabs/simplicity_sdk/CMakeLists.txt

@@ -210,7 +210,6 @@ endif()
 zephyr_library_sources_ifdef(CONFIG_SOC_GECKO_DEV_INIT     ${COMMON_DIR}/src/sl_slist.c)
 if(CONFIG_SOC_GECKO_CORE)
   zephyr_library_sources_ifdef(CONFIG_SOC_GECKO_CORE
-    ${EMLIB_DIR}/src/em_core.c
     ${COMMON_DIR}/src/sl_core_cortexm.c
   )
   zephyr_compile_definitions(

west.yml

@@ -235,7 +235,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 95fb8af40b1fd6d9c9cb5ed99ef2f60930361b2b
+      revision: 8f70355d7bf45ace0e985bd9646ee8ad85e219ec
       path: modules/hal/silabs
       groups:
         - hal