adds missing build system changes from a prio commit

port/threadx/CMakeLists.txt

@@ -2,7 +2,8 @@
 target_sources(${PROJECT_NAME}
     PRIVATE
     # {{BEGIN_TARGET_SOURCES}}
-    ${CMAKE_CURRENT_LIST_DIR}/src/tx_initialize_low_level.S
+    ${CMAKE_CURRENT_LIST_DIR}/src/trap_entry.S
+    ${CMAKE_CURRENT_LIST_DIR}/src/tx_initialize_low_level.c
     ${CMAKE_CURRENT_LIST_DIR}/src/tx_thread_context_restore.S
     ${CMAKE_CURRENT_LIST_DIR}/src/tx_thread_context_save.S
     ${CMAKE_CURRENT_LIST_DIR}/src/tx_thread_interrupt_control.S