[PATCH V3] cpuidle/powernv: Read target_residency value of idle states from DT if available

[Stewart Smith]

Preeti U Murthy <preeti at linux.vnet.ibm.com> writes:
> The device tree now exposes the residency values for different idle states. Read
> these values instead of calculating residency from the latency values. The values
> exposed in the DT are validated for optimal power efficiency. However to maintain
> compatibility with the older firmware code which does not expose residency
> values, use default values as a fallback mechanism. While at it, use better
> APIs to parse the powermgmt device tree node so as to avoid endianness
> transformation.
>
> Signed-off-by: Preeti U Murthy <preeti at linux.vnet.ibm.com>

Same acked-by as before, from perspective of "I merged the firmware side
of things" and things look godo in relation to firmware PoV.

Acked-by: Stewart Smith <stewart at linux.vnet.ibm.com>