* config/iq2000/iq2000-protos.h (function_arg): Delete.
	(function_arg_advance): Delete.
	* config/iq2000/iq2000.h (FUNCTION_ARG, FUNCTION_ARG_ADVANCE): Delete.
	* config/iq2000/iq2000.c (function_arg): Rename to...
	(iq2000_function_arg): ...this.  Make static.  Take a const_tree and
	a bool.
	(function_arg_advance): Rename to...
	(iq2000_function_arg_advance): ...this.  Make static.  Take a
	const_tree and a bool.
	(iq2000_expand_prologue): Call iq2000_function_arg_advance and
	iq2000_function_arg.
	(iq2000_pass_by_reference): Call iq2000_function_arg).
	(TARGET_FUNCTION_ARG, TARGET_FUNCTION_ARG_ADVANCE): Define.

From-SVN: r166035