ANDROID: GKI: add symbols to ABI

After demand paging is captured during APP launch,
we can do it in advance before next launch.
Add the symbols for it here.

INFO: 4 function symbol(s) added
  'unsigned int filemap_get_folios(struct address_space*, unsigned long*, unsigned long, struct folio_batch*)'
  'unsigned int find_get_pages_range_tag(struct address_space*, unsigned long*, unsigned long, xa_mark_t, unsigned int, struct page**)'
  'void page_cache_async_ra(struct readahead_control*, struct folio*, unsigned long)'
  'void page_cache_sync_ra(struct readahead_control*, unsigned long)'

Bug: 315913896
Bug: 331513417
Signed-off-by: Lianjun Huang <huanglianjun@xiaomi.com>
Signed-off-by: Lianjun Huang <huanglianjun@xiaomi.corp-partner.google.com>
Change-Id: I3f42c39c6432303e69f1fbae56fabf620381d8c5
(cherry picked from commit 2e78395aadf85de8f736b4e5f352e9ed950822fb)