Remove hardware/qcom/power

 * This is deprecated. It was only used by Nexus devices, and they now
   have the PowerHAL within their individual device repositories.

Change-Id: I39322ff9ce66eeeb84e0893aa320da3eceb03639
Merge remote-tracking branch 'cm/cm-12.0' into cm-12.0

Conflicts:
	default.xml