power_hikey: Add schedtune boosting and fallback

Add logic to use the EAS schedtune interface to
do interactive boosting, as well as setting back
to non-boosted mode.

Change-Id: I47c2e43135a707a88000cb495e0330ea1e02afa4
Signed-off-by: John Stultz <john.stultz@linaro.org>
1 file changed