ANDROID: add vendor fields to lruvec to record refault stats

struct lruvec :: ANDROID_VENDOR_DATA(1)
It is pointer to a struct to record the following message:
1）the account of workingset_restore pages of cached anonymous and
   file pages
This is used to adjust the strategy and amount of reclaiming data.

Bug: 225795494
Change-Id: I34e57ee23b6c97ac91effa5b72513d238335a996
Signed-off-by: Bing Han <bing.han@transsion.com>
(cherry picked from commit 1b14ae01)
(cherry picked from commit dcac7070)