PR ld/11304

	PR ld/11304
	* ldlang.c (exp_init_os): Delete forward declaration.
	(init_os): Don't check for bfd_section already created and don't
	init addr_tree and load_base expressions here.
	(map_input_to_output_sections): Only map input to output sections
	and set constraints here, and as an exception, create output
	sections which have their address set.  Move all the other code to..
	(create_other_output_sections): ..here.  New function.  Handle init
	of addr_tree and load_base here too.
	(lang_process): Call create_other_output_sections.