ANDROID: Update symbol list for mtk

1. Generated with:
  BUILD_CONFIG=common/build.config.gki.aarch64 build/build_abi.sh --update

Leaf changes summary: 4 artifacts changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 4 Added functions
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

4 Added functions:

  [A] 'function int kill_pid(pid*, int, int)'
  [A] 'function bool kthread_freezable_should_stop(bool*)'
  [A] 'function int trace_set_clr_event(const char*, const char*, int)'
  [A] 'function int vsscanf(const char*, const char*, va_list)'

Bug: 208150815
Signed-off-by: Dean Chiang <dean.chiang@mediatek.com>
Change-Id: I6bcb80693292d7a158bffef92e345f85afac924e