iq2000-protos.h: Remove the prototype for iq2000_setup_incoming_varargs.

	* config/iq2000/iq2000-protos.h: Remove the prototype for
	iq2000_setup_incoming_varargs.
	* config/iq2000/iq2000.c (TARGET_PROMOTE_FUNCTION_ARGS): New.
	(TARGET_PROMOTE_FUNCTION_RETURN): Likewise.
	(TARGET_PROMOTE_PROTOTYPES): Likewise.
	(TARGET_STRUCT_VALUE_RTX): Likewise.
	(TARGET_RETURN_IN_MEMORY): Likewise.
	(TARGET_SETUP_INCOMING_VARARGS): Likewise.
	(TARGET_STRICT_ARGUMENT_NAMING): Likewise.
	(iq2000_return_in_memory): Likewise.
	(iq2000_setup_incoming_varargs): Make it static.  Receive the
	first argument by reference.
	* config/iq2000/iq2000.h (PROMOTE_FUNCTION_ARGS): Remove.
	(PROMOTE_FUNCTION_RETURN): Likewise.
	(PROMOTE_PROTOTYPES): Likewise.
	(RETURN_IN_MEMORY): Likewise.
	(STRUCT_VALUE): Likewise.
	(SETUP_INCOMING_VARARGS): Likewise.
	(STRICT_ARGUMENT_NAMING): Likewise.

From-SVN: r76739