Control suspend optimizations from framework

The suspend optimizations handling in the driver is being removed.
The framework will hence forth control when these optimizations occur -
we do this at screen off and hold a short wakelock to ensure this.

We also remove the use of the now defunct setsuspendopt command and
handle the high perf locking with the new suspend mode command.

Change-Id: Ia12e38befb2c4f85cad6612bc8f807805bd0dae1