[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.

https://github.com/CyanogenMod/android_packages_apps_Bluetooth/commit/15bb907b0a1ccdcec7617778371748bee5f7eeb3