ANDROID: GKI: add symbols of vendor hooks to ABI for swapping in ahead

Add symbols of vendor hooks to capture demand paging during APP launch,
so we can do it in advance in next launch.
INFO: 1 function symbol(s) added
  'int __traceiter_android_vh_read_pages(void*, struct readahead_control*)'

1 variable symbol(s) added
  'struct tracepoint __tracepoint_android_vh_read_pages'

Bug: 315913896
Signed-off-by: Lianjun Huang <huanglianjun@xiaomi.com>
Signed-off-by: Lianjun Huang <huanglianjun@xiaomi.corp-partner.google.com>
Change-Id: Ibb1e31b6912f7b6b92b76727f7e5043897434def