microblaze-protos.h (function_arg): Delete.

microblaze-protos.h (function_arg): Delete.

	* config/microblaze/microblaze-protos.h (function_arg): Delete.
	(function_arg_advance): Delete.
	* config/microblaze/microblaze.h (FUNCTION_ARG_ADVANCE): Delete.
	(FUNCTION_ARG): Delete.
	* config/microblaze/microblaze.c (function_arg_advance): Rename to...
	(microblaze_function_arg_advance): ...this.  Make static.  Take a
	const_tree and a bool.
	(function-arg): Rename to...
	(microblaze_function_arg): ...this.  Make static.  Take a const_tree
	and a bool.
	(microblaze_expand_prologue): Call targetm.calls.function_arg and
	targetm.calls.function_arg_advance.
	(TARGET_FUNCTION_ARG, TARGET_FUNCTION_ARG_ADVANCE): Define.

From-SVN: r166188