mips.h (processor_type): Add names for the 24K.

mips.h (processor_type): Add names for the 24K.

	* config/mips/mips.h (processor_type): Add names for the 24K.
	* config/mips/mips.c (mips_cpu_info_table): Add names for the 24K
	processor family.
	* config/mips/mips.md (cnv_mode): New attribute for recording the
	conversion types of float convert insns.
	(cpu): Add 24k and 24kx.
	(include): Include 24k.md file.
	(truncdfsf2, extendsfdf2, fix_truncdfsi2_insn, fix_truncdfsi2_macro)
	(fix_truncdfdi2, fix_truncsfdi2, floatsidf2, floatdidf2, floatsisf2)
	(floatdisf2): Setup cnv_mode.
	(fix_truncsfsi2_insn, fix_truncsfsi2_macro): Changed mode to SF and
	setup cnv_mode.
	* config/mips/24k.md: New file, contains 24k DFA pipeline
	description.

From-SVN: r99429