* config/bfin/bfin-protos.h (bfin_expand_epilogue): Add a third
	argument of type bool.
	* config/bfin/bfin.c (add_to_reg): Add epilogue_p as a fourth
	argument. Safely select temporary P register according to it.
	(do_link): Change call site of add_to_reg accordingly.
	(do_unlink): Add epilogue_p as a fourth argument and pass it
	to add_to_reg.
	(expand_interrupt_handler_epilogue): Change call of do_unlink
	accordingly.
	(bfin_expand_prologue): Add a third argument sibcall_p.
	* config/bfin/bfin.md (epilogue): Change call of
	bfin_expand_epilogue accordingly.
	(sibcall_epilogue): Likewise.
	(eh_return_internal): Likewise.

From-SVN: r124542