doc: releases: Add a new migration guide entry to espi

Add the following property renaming entries to
the migration:

* io_girq
* vw_girqs
* pc_girq
* poll_timeout
* poll_interval
* consec_rd_timeout
* sus_chk_delay
* sus_rsm_interval

Signed-off-by: James Roy <rruuaanng@outlook.com>