userspace/ppsi: uplift ppsi to support peer delays

add the follwing fields to the wrs_dump_shmem:
--struct pp_instance:
  --t5 /* *the* stamps */
  --t6 /* *the* stamps */
  --t4_cf /* peer delay */
  --t6_cf /* peer delay */
--struct wr_servo_state:
  --t5
  --t6
remove:
--struct pp_instance:
  --log_min_delay_req_interval
modify:
--struct pp_instance:
  --role from unsigned char to int
  --proto from unsigned char to int
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>