[include/elf]

[include/elf]
	* mips.h (E_MIPS_MACH_4120, E_MIPS_MACH_5400, E_MIPS_MACH_5500): New.

[bfd/]
	* archures.c (bfd_mach_mips4120, bfd_mach_mips5400): New.
	(bfd_mach_mips5500): New.
	* cpu-mips.c (I_mips4120, I_mips5400, I_mips5500): New.
	(arch_info_struct): Add corresponding entries here.
	* elfxx-mips.c (_bfd_elf_mips_mach): Handle E_MIPS_MACH_4120,
	E_MIPS_MACH_5400 and E_MIPS_MACH_5500.
	(_bfd_mips_elf_final_write_processing): Handle bfd_mach_mips4120,
	bfd_mach_mips5400 and bfd_mach_mips5500.
	(_bfd_mips_elf_mach_extends_p): New function.
	(_bfd_mips_elf_merge_private_bfd_data): Use it to help merge
	the EF_MIPS_MACH flags.
	* bfd-in2.h: Regenerate.