ld: Make linker print memory usage

The memory usage info from the linker is a more precise value of how
much memory is used.

Author: NickeZ

src/CMakeLists.txt

@@ -538,5 +538,7 @@ if(CMAKE_CROSSCOMPILING)
     if(NOT CMAKE_BUILD_TYPE STREQUAL "DEBUG")
       target_compile_options(${name}.elf PRIVATE "-Werror")
     endif()
+
+    target_link_libraries(${name}.elf PRIVATE -Wl,--print-memory-usage)
   endforeach()
 endif()