adds small cleanups towards updating the entire build system

port/netxduo/CMakeLists.txt

@@ -0,0 +1,12 @@
+
+target_sources(${PROJECT_NAME}
+    PRIVATE
+    # {{BEGIN_TARGET_SOURCES}}
+    ${CMAKE_CURRENT_LIST_DIR}/src/mnrs_network_driver.c
+    # {{END_TARGET_SOURCES}}
+)
+
+target_include_directories(${PROJECT_NAME}
+    PUBLIC
+    ${CMAKE_CURRENT_LIST_DIR}/inc
+)