SystemUI: Tiny expanding improvement

Signed-off-by: BigBrother1984 <carlosavignano@aospa.co>
[1/3]frameworks/base: add "Accept all files" option for incoming files via Bluetooth

This patch defines a key to store the option value in Settings Provider db

Change-Id: I993d7ec77b49f608a5a17e5a8516e52fc5d82946