Battery temp: Ensure preference is updated

I observed a rare situation where the preference isn't updated and it
gets stuck on the last reading. Switching between accounts (multiuser),
I was able to spot the jank. This commit ensures that this doesn't
happen as it will be updated the same time other preferences are updated.

Change-Id: Iaa9e9cb757ce4139a7492c3d9405212ff26168b7
1 file changed