boards: nordic: nrf54h20dk: fix debugging for iron board variant

The required jlink script was not added due to missing entry in the
board check. Also change the check for app vs rad to be on SOC level.

Signed-off-by: Håkon Amundsen <haakon.amundsen@nordicsemi.no>

Author: hakonfam

boards/nordic/nrf54h20dk/board.cmake

@@ -2,8 +2,9 @@
 
 include(${ZEPHYR_BASE}/boards/common/nrfutil.board.cmake)
 
-if(CONFIG_BOARD_NRF54H20DK_NRF54H20_CPUAPP OR CONFIG_BOARD_NRF54H20DK_NRF54H20_CPURAD)
-  if(CONFIG_BOARD_NRF54H20DK_NRF54H20_CPUAPP)
+if(CONFIG_BOARD_NRF54H20DK_NRF54H20_CPUAPP OR CONFIG_BOARD_NRF54H20DK_NRF54H20_CPURAD
+    OR CONFIG_BOARD_NRF54H20DK_NRF54H20_CPUAPP_IRON)
+  if(CONFIG_SOC_NRF54H20_CPUAPP)
     set(JLINKSCRIPTFILE ${CMAKE_CURRENT_LIST_DIR}/support/nrf54h20_cpuapp.JLinkScript)
   else()
     set(JLINKSCRIPTFILE ${CMAKE_CURRENT_LIST_DIR}/support/nrf54h20_cpurad.JLinkScript)