* config/tc-arm.c (my_get_float_expression): Rename fpa_immediate.
	Fold in exact-string-match logic from fp_op2.  Return the
	pseudo-register number, not the index into the table.
	(fp_op2): Delete.
	(OP_RF_IF): New operand parse code.
	(parse_operand): Implement it.
	(do_fpa_cmp, do_fpa_monadic, do_fpa_dyadic): Use parse_operands.