[1/2] Add battery level around unlock ring

PS1: squash conflicts
PS2: Untested at the moment
PS3: Works well
PS4: Attempt to only work on expanded desktop/pie mode

Signed-off-by: Ayysir <dresadd09691@gmail.com>

Change-Id: I076307a0d6bf80b1fc7961cb7520a960818fba5c

Conflicts:
	core/java/android/provider/Settings.java