ANDROID: ABI/Whitelist: update for db845c

Yet again, adds a whitelist for the symbols used by the db845c
device and updates the ABI representation accordingly.

abi report:

 Comparing ABI against expected definition (abi_gki_aarch64.xml)
========================================================
 ABI report has been created at /home/docker/repo/out_abi/android-5.4/dist/abi.report
 ABI DIFFERENCES HAVE BEEN DETECTED! (RC=8)
========================================================
Leaf changes summary: 2 artifacts changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 2 Added functions
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

2 Added functions:

  [A] 'function bool __list_add_valid(list_head*, list_head*, list_head*)'
  [A] 'function bool __list_del_entry_valid(list_head*)'

Bug: 146449535
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: Ic755e50b21aba2ae173724b27a23a520e756e6b2