Bluetooth: Set HFP HF stream Volume.

Update HFP HF stream volume when volume is changed
on AG or on HFP.

Change-Id: I4415cc6444d57c221a2bb4f5794328e6dace8f7b
[2/3]Bluetooth: add "Accept all files" option for incoming files via Bluetooth

  This patch will let the OBEX server read "Accept all files" option
before it starts to check mime-type whitelist.
  If not enabled,the check process will go on as usual.
  If enabled,mime-type checking will be skipped.

Change-Id: I056f88246911da0f47da9043187ff3f959315dce