BT: Never store value greater than threshold volume

- Threshold volume value is stored when current
  remote volume is too high.
- During BT Off, race condition with cleanup lead
  to saving volume value greater than threshold
- This change ensures that volume greater than
  threshold value is not stored.

CRs-Fixed: 2543773

Change-Id: I23f30e367bcf4daabd808b411408ac12d0107b64
1 file changed