Add support for native kernel and callout wakelocks

 * Moved wakelock-related code to osi/src/wakelock.c
   The API is in osi/include/wakelock.h

 * Use wakelock_set_os_callouts() to specify native kernel
   or callout-based wakelock.
   On Android, wakelock_set_os_callouts() is called to
   set the bt_os_callouts_t callbacks into the Java layer.

 * Renamed alarm_set_wake_lock_paths() to wakelock_set_paths()

Also, added Bluetooth Wakelock Statistics to the bugreport.
Sample output:

$ adb shell dumpsys bluetooth_manager
...
Bluetooth Wakelock Statistics:
  Wakelock is acquired                    : false
  Wakelock acquired/released count        : 5 / 5
  Wakelock acquired/released errors       : 0 / 0
  Wakelock last acquired time (ms)        : 1524
  Wakelock acquired time min/max/avg (ms) : 1511 / 8104 / 3167
  Wakelock total acquired time (ms)       : 15836
  Bluetooth total run time (ms)           : 44123

Bug: 26645431
Change-Id: I42bfb7db5b016719faea39e47ebc77c3ad02467b
9 files changed