keyguard: add smart cover support

Change-Id: I18f312373767d1ec970d323ddd626cf0ab1edf93
Smart cover: add required sendToSleep

Change-Id: I46939605bfd5f9ffed5c72d0b5c6dd422ebdc523
Smart cover: add missing strings / plurals

Change-Id: I66f3c19cef5fad3ad55b2578aac08a3cf9bfe998
[2/2] Add option to disable smart cover window screen
Mostly for those with a smart cover without a window

Change-Id: Ice2fd2259c5431971276c36a27c61d6ec8f2a27b
Signed-off-by: willl03 <wgangers@gmail.com>
Make "disable smart cover option" abide by smartcover overlay

Change-Id: Ifb2987670f7a5ae5e27097c8cd036e56d5248836
Signed-off-by: Josue Rivera <prbassplayer@gmail.com>