Update check for working assembler --gdwarf-4 option

Update check for working assembler --gdwarf-4 option

Rename HAVE_AS_WORKING_DWARF_4_FLAG to HAVE_AS_WORKING_DWARF_N_FLAG
Don't set HAVE_AS_WORKING_DWARF_N_FLAG if --gdwarf-5/--gdwarf-4 generate
an extra assembly input file in debug info from compiler generated
.debug_line or fail with the APP marker:

https://sourceware.org/bugzilla/show_bug.cgi?id=25878
https://sourceware.org/bugzilla/show_bug.cgi?id=26740
https://sourceware.org/bugzilla/show_bug.cgi?id=26778

Also replace success with dwarf4_success in the 32-bit --gdwarf-4 check.

	PR bootstrap/97451
	* configure.ac (HAVE_AS_WORKING_DWARF_4_FLAG): Renamed to ...
	(HAVE_AS_WORKING_DWARF_N_FLAG): This.  Don't define if there is
	an extra assembly input file in debug info.  Replace success
	with dwarf4_success in the 32-bit --gdwarf-4 check.
	* dwarf2out.c (asm_outputs_debug_line_str): Check
	HAVE_AS_WORKING_DWARF_N_FLAG instead of
	HAVE_AS_WORKING_DWARF_4_FLAG.
	* gcc.c (ASM_DEBUG_SPEC): Likewise.
	(ASM_DEBUG_OPTION_SPEC): Likewise.
	* config.in: Regenerated.
	* configure: Likewise.