CREATE TYPE t_rp_row AS OBJECT (
  scn           NUMBER,
  DATABASE_INCARNATION#  number,
  GUARANTEE_FLASHBACK_DATABASE varchar(3),
  STORAGE_SIZE  number,
  time    timestamp(9),
  restore_point_time timestamp(9),
  PRESERVED varchar2(3),
  name varchar2(128)
);
CREATE TYPE t_rp_tab IS TABLE OF t_rp_row;

create or replace FUNCTION get_rp_info  
          return t_rp_tab pipelined as
begin
  for i in ( select * from v_$restore_point   )
 loop
   pipe row (t_rp_row(i.scn,i.DATABASE_INCARNATION#,i.GUARANTEE_FLASHBACK_DATABASE,i.STORAGE_SIZE,i.time,i.restore_point_time,i.PRESERVED,i.name));    
  end loop;
 return;
end;

and you can grant select on this funtion to every one, without FLASHBACK ANY TABLE\SELECT_CATALOG_ROLE\SELECT ANY grants:

TEST_RP@u10pgp1> select * from table(SYS.get_rp_info)
  2  ;

       SCN DATABASE_INCARNATION# GUARANTEE STORAGE_SIZE TIME				RESTORE_POINT_TIME	       PRESERVED NAME
---------- --------------------- --------- ------------ ------------------------------- ------------------------------ --------- ----------
3.3816E+11		       2 NO		      0 14-DEC-15 04.58.27.000000000 PM 			       NO	 T1