Correct call to add_file_ref

tools/export/makefile/__init__.py

@@ -272,10 +272,14 @@ class Arm(Makefile):
         if self.resources.linker_script:
             sct_file = self.resources.get_file_refs(FileType.LD_SCRIPT)[-1]
             new_script = self.toolchain.correct_scatter_shebang(
-                sct_file, dirname(sct_file.name))
+                sct_file, dirname(sct_file.name)
+            )
             if new_script is not sct_file:
-                self.resources.add_files_to_type(
-                    FileType.LD_SCRIPT, [new_script])
+                self.resources.add_file_ref(
+                    FileType.LD_SCRIPT,
+                    new_script.name,
+                    new_script.path
+                )
         return super(Arm, self).generate()
 
 class Armc5(Arm):

tools/toolchains/arm.py

@@ -284,7 +284,7 @@ class ARM(mbedToolchain):
                         scatter file
 
         Return:
-        The location of the correct scatter file
+        The FileRef of the correct scatter file
 
         Side Effects:
         This method MAY write a new scatter file to disk