Compiler/TI: Restore response file usage for linker

The commit 98fea8205e (Compiler/TI: Avoid response file usage for
linker, 2020-07-11, v3.19.0-rc1~495^2) disabled linker file usage by
default.  The previous settings were working, even if not for all cases.
Restore them and add an explanation in a comment.

Issue: #22233

Modules/Compiler/TI.cmake

@@ -16,6 +16,10 @@ set(__COMPILER_TI_SOURCE_FLAG_ASM "--asm_file")
 
 macro(__compiler_ti lang)
   set(CMAKE_${lang}_RESPONSE_FILE_FLAG "--cmd_file=")
+  # Using --cmd_file flag is not possible after the --run_linker flag.
+  # By using a whitespace only the filename is used without flag.
+  # That file is interpreted as linker command file which may contain files to link.
+  set(CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG " ")
 
   set(CMAKE_INCLUDE_FLAG_${lang} "--include_path=")
   set(CMAKE_DEPFILE_FLAGS_${lang} "--preproc_with_compile --preproc_dependency=<DEP_FILE>")
@@ -29,11 +33,6 @@ macro(__compiler_ti lang)
   set(CMAKE_${lang}_ARCHIVE_APPEND "<CMAKE_AR> qa <TARGET> <OBJECTS>")
   set(CMAKE_${lang}_ARCHIVE_FINISH "")
 
-  # After the --run_linker flag a response file is not possible
-  set(CMAKE_${lang}_RESPONSE_FILE_LINK_FLAG "")
-  set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_LIBRARIES 0)
-  set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_OBJECTS 0)
-
   set(CMAKE_${lang}_LINK_EXECUTABLE "<CMAKE_${lang}_COMPILER> <FLAGS> --run_linker --output_file=<TARGET> --map_file=<TARGET_NAME>.map <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> <LINK_LIBRARIES>")
 endmacro()