Revert "Revert "Add STM32H573i-DK platform""

This reverts commit 822806ce807c071a6131d25cbc43490bae3e53b3.

Reason for revert: The original issue is fixed and positively tested.

Change-Id: If912f709f42af5af95d4e085f3e71348f55bcab3
diff --git a/build_helper/build_helper_config_maps.py b/build_helper/build_helper_config_maps.py
index d130d14..546d55f 100644
--- a/build_helper/build_helper_config_maps.py
+++ b/build_helper/build_helper_config_maps.py
@@ -34,6 +34,7 @@
     "nxp/lpcxpresso55s69"                : "lpcxpresso55s69",
     "stm/stm32l562e_dk"                  : "stm32l562e_dk",
     "stm/b_u585i_iot02a"                 : "b_u585i_iot02a",
+    "stm/stm32h573i_dk"                  : "stm32h573i_dk",
     "stm/nucleo_l552ze_q"                : "nucleo_l552ze_q",
 }