camera: add power mode support

Based on commit 7036d66bec7697160ba1b2e255f1e7fae0c8c435 from CAF,
branch ics_chocolate.

Change-Id: I8a60668b18980fd5e6f9dd341db5a8a63deb99d0
CellInfoLte - Turn off debug

With debug on, it constantly spams the log. Turn it off for now to
keep the log cleaner.

Change-Id: I115a613c7140545d626c4f4fda7a697a00b9cc35