ANDROID: GKI: Update symbols to abi_gki_aarch64_oplus for extend copy & fbarrier feature

8 function symbol(s) added
  'int __blkdev_issue_discard(struct block_device*, sector_t, sector_t, gfp_t, struct bio**)'
  'unsigned long __page_file_index(struct page*)'
  'void address_space_init_once(struct address_space*)'
  'void blk_finish_plug(struct blk_plug*)'
  'void blk_start_plug(struct blk_plug*)'
  'bool prepare_to_wait_exclusive(struct wait_queue_head*, struct wait_queue_entry*, int)'
  'void** radix_tree_lookup_slot(const struct xarray*, unsigned long)'
  'void radix_tree_replace_slot(struct xarray*, void**, void*)'

Bug: 283021230
Change-Id: Iec663ed6ed23c8c3245b609c3d8748919fa34471
Signed-off-by: Weichao Guo <guoweichao@oppo.corp-partner.google.com>