* config/tc-arm.c (enum wreg_type): Delete.
	(IWMMXT_REG_WR, IWMMXT_REG_WC, IWMMXT_REG_WCG): All occurrences
	replaced with REG_TYPE_MMXWR, REG_TYPE_MMXWC, REG_TYPE_MMXWCG
	respectively.
	(arm_reg_parse_multi): New function.
	(arm_reg_parse, wreg_required_here, mav_reg_required_here)
	(s_arm_unwind_save): Rewrite in terms of arm_reg_parse_multi.