ANDROID: GKI: Update symbol list for Tuxera

4 function symbol(s) added
  'int block_read_full_page(struct page *, get_block_t *)'
  'void inode_add_bytes(struct inode *, loff_t)'
  'int try_to_free_buffers(struct page *)'
  'int utf32_to_utf8(unicode_t, u8 *, int)'

1 variable symbol(s) added
  'unsigned int dirty_writeback_interval'

Bug: 307761441
Change-Id: I32c48bc74937b3d82abd0534f3afd731fe36db34
Signed-off-by: Aaro Mäkinen <aaro@tuxera.com>