ANDROID: GKI: export symbols to modify lru stats

Export the symbols below to modify LRU state:
  __mod_lruvec_state
  mem_cgroup_update_lru_size

Bug: 296526618
Change-Id: Ie05a2d21fa6ad400877b1c41d732346232452f78
Signed-off-by: Lianjun Huang <huanglianjun@xiaomi.corp-partner.google.com>
(cherry picked from commit I7804b30282b865a004f5a7193537aea688901043)
Signed-off-by: Zichun Zheng <zhengzichun@oppo.com>