[nrf noup] modules: hal_nordic: Drop EXACT nrf-regtool check

We don't want an exact version match, a minimum one is enough. This
aligns it also with the upstream copy of this file.

Signed-off-by: Karsten Koenig <karsten.koenig@nordicsemi.no>

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 5.6.0 EXACT REQUIRED
+  find_package(nrf-regtool 5.6.0 REQUIRED
     COMPONENTS ${nrf_regtool_components}
     PATHS ${CMAKE_CURRENT_LIST_DIR}/nrf-regtool
     NO_CMAKE_PATH