Add LPM support into vnd_hammerhead.txt

Adding configuration for Bluetooth Low Power Mode in HAL

Change-Id: I5a0448a507a419c9fbdce22cb614551ff66485e2
Signed-off-by: hyungjung0521.kim <hyungjung0521.kim@lge.com>
merge in KQS81M
Merge tag 'android-4.4.2_r2' of https://android.googlesource.com/platform/hardware/broadcom/libbt into kitkat

Android 4.4.2 Release 2