ANDROID: GKI: add allowed list file for xiaomi

Leaf changes summary: 3 artifacts changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 3 Added functions
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

3 Added functions:

  [A] 'function void* mempool_alloc_pages(gfp_t, void*)'
  [A] 'function void mempool_free_pages(void*, void*)'
  [A] 'function int mempool_resize(mempool_t*, int)'

Bug: 205803389
Change-Id: Iaa91649754f327b579e53537f904b5adb425acd1
Signed-off-by: hefayun <hefayun@xiaomi.com>
Signed-off-by: Giuliano Procida <gprocida@google.com>