* NEWS: Mention removed "set mips stack-arg-size" and "set mips

	* NEWS: Mention removed "set mips stack-arg-size" and "set mips
	saved-gpreg-size".

	* mips-tdep.c (MIPS32_REGSIZE, MIPS64_REGSIZE): New constants.
	(size_auto, size_32, size_64, size_enums, mips_abi_regsize_string)
	(mips_stack_argsize_string, mips_stack_argsize): Delete.
	(mips_abi_regsize): Simplify.
	(mips_eabi_push_dummy_call, mips_n32n64_push_dummy_call)
	(mips_n32n64_return_value, mips_o32_push_dummy_call)
	(mips_o32_return_value, mips_o64_push_dummy_call)
	(mips_o64_return_value): Propogate constant register sizes.  Use the
	ABI register size instead of mips_stack_argsize.
	(mips_dump_tdep): Don't print mips_stack_argsize.
	(_initialize_mips_tdep): Remove saved-gpreg-size and stack-arg-size
	settings.

	* gdb.texinfo (MIPS): Remove documentation for set mips saved-gpreg-size,
	show mips saved-gpreg-size, and set mips stack-arg-size.