Cleanup to use the new SYMSEARCH_BIND_POINTER_TO macro.
Clarify README building instructions
Unthrottle the CPU stepwise when using automatic throttling

Previously, we used to call omap_thermal_unthrottle() when the CPU
temperature is below the cold threshold, but this causes rapid frequency
bouncing.

Instead, step up the CPU frequency one step as the temperature goes
down.
Redo throttle interval timer settings

Since we need to react to temperatures below the cold threshold
for unthrottling, remove the concept of a "warm" temperature and
only have hot and cold zones for scheduling.

If the temperature is above the cold temperature - 10C, then the next
temperature check occurs in a second, otherwise it will occur in 5
seconds.