cpuidle: lpm-levels: Add support to parse LPM parameters

Add support for providing LPM prediction parameters in
device tree and parsing them.

Change-Id: I60fd7e8d32505e212100b886df29b72a9999ca6d
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>
4 files changed