Reset cached light sensor values when toggling auto-brightness mode

Now the screen brightness will readjust to ambient lighting when toggling
auto-brightness on and off in Settings or the Power Widget.

Bug: 5486091

Change-Id: Ic98939fe1c59cb8def0f84266e48ca00329d6b30
Signed-off-by: Mike Lockwood <lockwood@android.com>
1 file changed