[PATCH 3] intel_idle: Idle driver changes for PM

[PATCH 3] intel_idle: Idle driver changes for PM

BZ:26897

This patch has PM specific changes to idle driver catering to all
Platforms.

Change-Id: I4c8499c127afd18fbf0e64154428ebd5a5cbe612
Signed-off-by: Vishwesh M Rudramuni <vishwesh.m.rudramuni@intel.com>
Signed-off-by: Nivedha Krishnakumar <nivedha.krishnakumar@intel.com>
Signed-off-by: Ramachandra Sudarshan N <sudarshan.n.ramachandra@intel.com>
Signed-off-by: Youvedeep Singh <youvedeep.singh@intel.com>
Reviewed-on: http://android.intel.com:8080/40186
Reviewed-by: Mansoor, Illyas <illyas.mansoor@intel.com>
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Martin, LoicX <loicx.martin@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>