[nrf noup] moduled: hal_nordic: require nrf-regtool

Upstream not ready yet, revert once applied there.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
Signed-off-by: Karsten Koenig <karsten.koenig@nordicsemi.no>

(cherry picked from commit 6384b58)

modules/hal_nordic/CMakeLists.txt

@@ -15,7 +15,7 @@ if(CONFIG_NRF_REGTOOL_GENERATE_BICR)
   list(APPEND nrf_regtool_components GENERATE:BICR)
 endif()
 if(DEFINED nrf_regtool_components)
-  find_package(nrf-regtool 8.1.2
+  find_package(nrf-regtool 8.1.2 REQUIRED
     COMPONENTS ${nrf_regtool_components}
     PATHS ${CMAKE_CURRENT_LIST_DIR}/nrf-regtool
     NO_CMAKE_PATH